Actinobacteria: Class of BACTERIA with diverse morphological properties. Strains of Actinobacteria show greater than 80% 16S rDNA/rRNA sequence similarity among each other and also the presence of certain signature nucleotides. (Stackebrandt E. et al, Int. J. Syst. Bacteriol. (1997) 47:479-491)RNA, Ribosomal, 16S: Constituent of 30S subunit prokaryotic ribosomes containing 1600 nucleotides and 21 proteins. 16S rRNA is involved in initiation of polypeptide synthesis.Proteobacteria: A phylum of bacteria consisting of the purple bacteria and their relatives which form a branch of the eubacterial tree. This group of predominantly gram-negative bacteria is classified based on homology of equivalent nucleotide sequences of 16S ribosomal RNA or by hybridization of ribosomal RNA or DNA with 16S and 23S ribosomal RNA.Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.Bacteria: One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.DNA, Ribosomal: DNA sequences encoding RIBOSOMAL RNA and the segments of DNA separating the individual ribosomal RNA genes, referred to as RIBOSOMAL SPACER DNA.Biodiversity: The variety of all native living organisms and their various forms and interrelationships.Sequence Analysis, DNA: A multistage process that includes cloning, physical mapping, subcloning, determination of the DNA SEQUENCE, and information analysis.Soil Microbiology: The presence of bacteria, viruses, and fungi in the soil. This term is not restricted to pathogenic organisms.DNA, Bacterial: Deoxyribonucleic acid that makes up the genetic material of bacteria.Metagenome: A collective genome representative of the many organisms, primarily microorganisms, existing in a community.Fresh Water: Water containing no significant amounts of salts, such as water from RIVERS and LAKES.Propionibacteriaceae: A family of gram-positive bacteria found in dairy products or in the intestinal tracts of animals.Biota: The spectrum of different living organisms inhabiting a particular region, habitat, or biotope.Petrosia: A genus of SPONGES in the family Petrosiidae, characterized by an ectosomal triangular or polygonal reticulation of spicule tracts or single spicules.Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Acidobacteria: A physiologically diverse phylum of acidophilic, gram-negative bacteria found in a wide variety of habitats, but particularly abundant in soils and sediments.Genes, rRNA: Genes, found in both prokaryotes and eukaryotes, which are transcribed to produce the RNA which is incorporated into RIBOSOMES. Prokaryotic rRNA genes are usually found in OPERONS dispersed throughout the GENOME, whereas eukaryotic rRNA genes are clustered, multicistronic transcriptional units.Actinomycetales: An order of gram-positive, primarily aerobic BACTERIA that tend to form branching filaments.Bacteroidetes: A phylum of bacteria comprised of three classes: Bacteroides, Flavobacteria, and Sphingobacteria.Betaproteobacteria: A class in the phylum PROTEOBACTERIA comprised of chemoheterotrophs and chemoautotrophs which derive nutrients from decomposition of organic material.Micrococcaceae: A family of bacteria ranging from free living and saprophytic to parasitic and pathogenic forms.Fusobacteria: A phylum of anaerobic, gram-negative bacteria with a chemoorganotrophic heterotrophic metabolism. They are resident flora of the OROPHARYNX.Streptomycetaceae: A family of soil bacteria. It also includes some parasitic forms.Geologic Sediments: A mass of organic or inorganic solid fragmented material, or the solid fragment itself, that comes from the weathering of rock and is carried by, suspended in, or dropped by air, water, or ice. It refers also to a mass that is accumulated by any other natural agent and that forms in layers on the earth's surface, such as sand, gravel, silt, mud, fill, or loess. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1689)Plankton: Community of tiny aquatic PLANTS and ANIMALS, and photosynthetic BACTERIA, that are either free-floating or suspended in the water, with little or no power of locomotion. They are divided into PHYTOPLANKTON and ZOOPLANKTON.Frankia: Genus of BACTERIA in the family Frankiaceae. They are nitrogen-fixing root-nodule symbionts of many species of woody dicotyledonous plants.Ecosystem: A functional system which includes the organisms of a natural community together with their environment. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)Verrucomicrobia: A phylum of gram-negative bacteria containing seven class-level groups from a wide variety of environments. Most members are chemoheterotrophs.Denaturing Gradient Gel Electrophoresis: Electrophoresis in which various denaturant gradients are used to induce nucleic acids to melt at various stages resulting in separation of molecules based on small sequence differences including SNPs. The denaturants used include heat, formamide, and urea.Microbiota: The full collection of microbes (bacteria, fungi, virus, etc.) that naturally exist within a particular biological niche such as an organism, soil, a body of water, etc.Soil: The unconsolidated mineral or organic matter on the surface of the earth that serves as a natural medium for the growth of land plants.Genome, Bacterial: The genetic complement of a BACTERIA as represented in its DNA.Archaea: One of the three domains of life (the others being BACTERIA and Eukarya), formerly called Archaebacteria under the taxon Bacteria, but now considered separate and distinct. They are characterized by: (1) the presence of characteristic tRNAs and ribosomal RNAs; (2) the absence of peptidoglycan cell walls; (3) the presence of ether-linked lipids built from branched-chain subunits; and (4) their occurrence in unusual habitats. While archaea resemble bacteria in morphology and genomic organization, they resemble eukarya in their method of genomic replication. The domain contains at least four kingdoms: CRENARCHAEOTA; EURYARCHAEOTA; NANOARCHAEOTA; and KORARCHAEOTA.Heterotrophic Processes: The processes by which organisms utilize organic substances as their nutrient sources. Contrasts with AUTOTROPHIC PROCESSES which make use of simple inorganic substances as the nutrient supply source. Heterotrophs can be either chemoheterotrophs (or chemoorganotrophs) which also require organic substances such as glucose for their primary metabolic energy requirements, or photoheterotrophs (or photoorganotrophs) which derive their primary energy requirements from light. Depending on environmental conditions some organisms can switch between different nutritional modes (AUTOTROPHY; heterotrophy; chemotrophy; or PHOTOTROPHY) to utilize different sources to meet their nutrients and energy requirements.Rhizosphere: The immediate physical zone surrounding plant roots that include the plant roots. It is an area of intense and complex biological activity involving plants, microorganisms, other soil organisms, and the soil.Metagenomics: The genomic analysis of assemblages of organisms.Seawater: The salinated water of OCEANS AND SEAS that provides habitat for marine organisms.Streptomyces coelicolor: A soil-dwelling actinomycete with a complex lifecycle involving mycelial growth and spore formation. It is involved in the production of a number of medically important ANTIBIOTICS.Cluster Analysis: A set of statistical methods used to group variables or observations into strongly inter-related subgroups. In epidemiology, it may be used to analyze a closely grouped series of events or cases of disease or other health-related phenomenon with well-defined distribution patterns in relation to time or place or both.Porifera: The phylum of sponges which are sessile, suspension-feeding, multicellular animals that utilize flagellated cells called choanocytes to circulate water. Most are hermaphroditic. They are probably an early evolutionary side branch that gave rise to no other group of animals. Except for about 150 freshwater species, sponges are marine animals. They are a source of ALKALOIDS; STEROLS; and other complex molecules useful in medicine and biological research.Gordonia Bacterium: A genus of gram-positive BACTERIA in the family Gordoniaceae, isolated from soil and from sputa of patients with chest disorders. It is also used for biotransformation of natural products.Microbial Consortia: A group of different species of microorganisms that act together as a community.Bacterial Physiological Phenomena: Physiological processes and properties of BACTERIA.Islands: Tracts of land completely surrounded by water.Symbiosis: The relationship between two different species of organisms that are interdependent; each gains benefits from the other or a relationship between different species where both of the organisms in question benefit from the presence of the other.Gastrointestinal Tract: Generally refers to the digestive structures stretching from the MOUTH to ANUS, but does not include the accessory glandular organs (LIVER; BILIARY TRACT; PANCREAS).Burkholderiaceae: A family of gram negative, aerobic, non-sporeforming, rod-shaped bacteria.Chloroflexi: Phylum of green nonsulfur bacteria including the family Chloroflexaceae, among others.Gammaproteobacteria: A group of the proteobacteria comprised of facultatively anaerobic and fermentative gram-negative bacteria.Ants: Insects of the family Formicidae, very common and widespread, probably the most successful of all the insect groups. All ants are social insects, and most colonies contain three castes, queens, males, and workers. Their habits are often very elaborate and a great many studies have been made of ant behavior. Ants produce a number of secretions that function in offense, defense, and communication. (From Borror, et al., An Introduction to the Study of Insects, 4th ed, p676)Sewage: Refuse liquid or waste matter carried off by sewers.RNA, Bacterial: Ribonucleic acid in bacteria having regulatory and catalytic roles as well as involvement in protein synthesis.Gram-Positive Bacteria: Bacteria which retain the crystal violet stain when treated by Gram's method.Soil Pollutants: Substances which pollute the soil. Use for soil pollutants in general or for which there is no specific heading.Bacterial Proteins: Proteins found in any species of bacterium.Diaminopimelic AcidArctic Regions: The Arctic Ocean and the lands in it and adjacent to it. It includes Point Barrow, Alaska, most of the Franklin District in Canada, two thirds of Greenland, Svalbard, Franz Josef Land, Lapland, Novaya Zemlya, and Northern Siberia. (Webster's New Geographical Dictionary, 1988, p66)Aquatic Organisms: Organisms that live in water.Fungi: A kingdom of eukaryotic, heterotrophic organisms that live parasitically as saprobes, including MUSHROOMS; YEASTS; smuts, molds, etc. They reproduce either sexually or asexually, and have life cycles that range from simple to complex. Filamentous fungi, commonly known as molds, refer to those that grow as multicellular colonies.Alphaproteobacteria: A class in the phylum PROTEOBACTERIA comprised mostly of two major phenotypes: purple non-sulfur bacteria and aerobic bacteriochlorophyll-containing bacteria.Base Composition: The relative amounts of the PURINES and PYRIMIDINES in a nucleic acid.Environmental Microbiology: The study of microorganisms living in a variety of environments (air, soil, water, etc.) and their pathogenic relationship to other organisms including man.Lakes: Inland bodies of still or slowly moving FRESH WATER or salt water, larger than a pond, and supplied by RIVERS and streams.Water Microbiology: The presence of bacteria, viruses, and fungi in water. This term is not restricted to pathogenic organisms.Actinomycetales Infections: Infections with bacteria of the order ACTINOMYCETALES.Streptomyces: A genus of bacteria that form a nonfragmented aerial mycelium. Many species have been identified with some being pathogenic. This genus is responsible for producing a majority of the ANTI-BACTERIAL AGENTS of practical value.Waste Water: Contaminated water generated as a waste product of human activity.Trees: Woody, usually tall, perennial higher plants (Angiosperms, Gymnosperms, and some Pterophyta) having usually a main stem and numerous branches.Gene Expression Regulation, Bacterial: Any of the processes by which cytoplasmic or intercellular factors influence the differential control of gene action in bacteria.DNA, Archaeal: Deoxyribonucleic acid that makes up the genetic material of archaea.Eukaryota: One of the three domains of life (the others being BACTERIA and ARCHAEA), also called Eukarya. These are organisms whose cells are enclosed in membranes and possess a nucleus. They comprise almost all multicellular and many unicellular organisms, and are traditionally divided into groups (sometimes called kingdoms) including ANIMALS; PLANTS; FUNGI; and various algae and other taxa that were previously part of the old kingdom Protista.Antibiosis: A natural association between organisms that is detrimental to at least one of them. This often refers to the production of chemicals by one microorganism that is harmful to another.

Kocuria palustris sp. nov. and Kocuria rhizophila sp. nov., isolated from the rhizoplane of the narrow-leaved cattail (Typha angustifolia). (1/597)

Two Gram-positive, aerobic spherical actinobacteria were isolated from the rhizoplane of narrow-leaved cattail (Typha angustifolia) collected from a floating mat in the Soroksar tributary of the Danube river, Hungary. Sequence comparisons of the 16S rDNA indicated these isolates to be phylogenetic neighbours of members of the genus Kocuria, family Micrococcaceae, in which they represent two novel lineages. The phylogenetic distinctness of the two organisms TA68T and TAGA27T was supported by DNA-DNA similarity values of less than 55% between each other and with the type strains of Kocuria rosea, Kocuria kristinae and Kocuria varians. Chemotaxonomic properties supported the placement of the two isolates in the genus Kocuria. The diagnostic diamino acid of the cell-wall peptidoglycan is lysine, the interpeptide bridge is composed of three alanine residues. Predominant menaquinone was MK-7(H2). The fatty acid pattern represents the straight-chain saturated iso-anteiso type. Main fatty acid was anteiso-C15:0. The phospholipids are diphosphatidylglycerol, phosphatidylglycerol and an unknown component. The DNA base composition of strains TA68T and TAGA27T is 69.4 and 69.6 mol% G+C, respectively. Genotypic, morphological and physiological characteristics are used to describe two new species of Kocuria, for which we propose the names Kocuria palustris, type strain DSM 11925T and Kocuria rhizophila, type strain DSM 11926T.  (+info)

Polyamine profiles within genera of the class Actinobacteria with LL-diaminopimelic acid in the peptidoglycan. (2/597)

Polyamine patterns of coryne- and nocardioform representatives of the class Actinobacteria with LL-diaminopimelic acid in the peptidoglycan, comprising strains of the genera Aeromicrobium, Nocardioides, Intrasporangium, Terrabacter, Terracoccus, Propioniferax, Friedmanniella, Microlunatus, Luteococcus and Sporichthya, were analysed. The different polyamine patterns were in good agreement with the phylogenetic heterogeneity within this group of actinomycetes. Strains of the closely related genera Nocardioides and Aeromicrobium were characterized by the presence of cadaverine. The second cluster, consisting of the type strains of the species Friedmanniella antarctica, Propioniferax innocua, Microlunatus phosphovorus and Luteococcus japonicus, displayed as a common feature the presence of the two predominant compounds spermidine and spermine. The presence of putrescine was common to the type strains of the species Intrasporangium calvum, Terrabacter tumescens and Terracoccus luteus. Sporichthya polymorpha, which is a representative of a separate line of descent, displayed spermidine as the predominant polyamine. These data indicate that polyamine patterns are suitable for the classification of actinomycetes with LL-diaminopimelic acid in the peptidoglycan.  (+info)

Whipple's arthritis: direct detection of Tropheryma whippelii in synovial fluid and tissue. (3/597)

We describe 2 patients presenting with polyarthritis in whom the synovial fluid (1 patient) or synovial tissue (1 patient) was positive for Tropheryma whippelii, the Whipple's disease-associated bacillus, when examined by polymerase chain reaction (PCR) and DNA sequencing. Histopathologic findings were consistent with articular Whipple's disease in the synovial fluid of 1 patient and the synovial tissue of the other. In both patients, bowel mucosal specimens were negative for Whipple's disease features by histologic and PCR methods. One patient was positive for T whippelii in the peripheral blood. Control synovial fluid specimens from 40 patients with other arthritides, including Lyme arthritis, were negative. Sequencing of a 284-basepair region of the 16S ribosomal RNA gene confirmed that the sequence is closely related to the known T whippelii sequence. Both patients responded to treatment with antibiotics.  (+info)

Characterization of a novel Atopobium isolate from the human vagina: description of Atopobium vaginae sp. nov. (4/597)

Phenotypic and phylogenetic studies were performed on a hitherto undescribed micro-organism isolated from the human vagina. Comparative 16S rRNA gene sequencing studies demonstrated that the unknown strain constituted a new subline within the genus Atopobium. The unknown bacterium was readily distinguished from other Atopobium species by biochemical tests and electrophoretic analysis of whole-cell proteins. Based on phylogenetic and phenotypic evidence, it is proposed that the unknown bacterium be classified as Atopobium vaginae sp. nov. The type strain of Atopobium vaginae is CCUG 38953T.  (+info)

Detection of three different types of 'Tropheryma whippelii' directly from clinical specimens by sequencing, single-strand conformation polymorphism (SSCP) analysis and type-specific PCR of their 16S-23S ribosomal intergenic spacer region. (5/597)

The 16S-23S rDNA intergenic spacer region of organisms identical with or closely related to 'Tropheryma whippelii', the uncultivated causative agent of Whipple's disease, was analysed directly from 38 clinical specimens of 28 patients using a specific nested PCR followed by direct sequencing. As compared to the reference sequence in public databases, two novel 'T. whippelii' spacer types were recognized. In the absence of DNA-DNA hybridization data it is uncertain whether the three types found represent subtypes of a single species or three different but closely related species. Methods were developed to detect all three variants by single-strand conformation polymorphism analysis and by type-specific PCR assays, thus allowing the screening of large numbers of specimens. Further studies may provide a clue to the possible associations between the type of infecting strain and the various clinical presentations of Whipple's disease.  (+info)

Evaluation of a specific nested PCR targeting domain III of the 23S rRNA gene of "Tropheryma whippelii" and proposal of a classification system for its molecular variants. (6/597)

"Tropheryma whippelii"-associated infections are usually confirmed histopathologically by using light microscopy. PCR assays targeting the 16S rRNA gene (16S rDNA) of "T. whippelii" are increasingly being applied for this purpose. Compared to microscopic analysis, PCR seems to be more sensitive, as indicated by the fact that several cases of Whipple's disease with negative histopathological findings but positive PCR results have been reported. Considering the lack of pathognomonic clinical features for this disease and the fact that "T. whippelii" DNA has repeatedly been found in patients without clinical Whipple's disease, such PCR results should be confirmed by additional tests. We have, therefore, evaluated a "T. whippelii"-specific nested PCR targeting domain III of the 23S rDNA with 41 clinical specimens known to contain "T. whippelii" 16S rDNA. All of these specimens were also positive for "T. whippelii" 23S rDNA. The specificity of the test was shown by sequencing of the amplicons and by the absence of amplicons in 38 negative controls. We consider this PCR test to be a suitable tool for confirming the presence of "T. whippelii" DNA in specimens with inconclusive histopathological findings. The information derived from sequencing of the partial "T. whippelii" 23S rDNA was then combined with our recent data of the 16S-23S rDNA spacer region of this organism. Overall, four different rDNA types are recognized in our proposed classification system for molecular variants of "T. whippelii." This preliminary scheme may provide a basis for further epidemiological and clinical studies with "T. whippelii" and associated diseases.  (+info)

Identification of polyphosphate-accumulating organisms and design of 16S rRNA-directed probes for their detection and quantitation. (7/597)

Laboratory-scale sequencing batch reactors (SBRs) as models for activated sludge processes were used to study enhanced biological phosphorus removal (EBPR) from wastewater. Enrichment for polyphosphate-accumulating organisms (PAOs) was achieved essentially by increasing the phosphorus concentration in the influent to the SBRs. Fluorescence in situ hybridization (FISH) using domain-, division-, and subdivision-level probes was used to assess the proportions of microorganisms in the sludges. The A sludge, a high-performance P-removing sludge containing 15.1% P in the biomass, was comprised of large clusters of polyphosphate-containing coccobacilli. By FISH, >80% of the A sludge bacteria were beta-2 Proteobacteria arranged in clusters of coccobacilli, strongly suggesting that this group contains a PAO responsible for EBPR. The second dominant group in the A sludge was the Actinobacteria. Clone libraries of PCR-amplified bacterial 16S rRNA genes from three high-performance P-removing sludges were prepared, and clones belonging to the beta-2 Proteobacteria were fully sequenced. A distinctive group of clones (sharing >/=98% sequence identity) related to Rhodocyclus spp. (94 to 97% identity) and Propionibacter pelophilus (95 to 96% identity) was identified as the most likely candidate PAOs. Three probes specific for the highly related candidate PAO group were designed from the sequence data. All three probes specifically bound to the morphologically distinctive clusters of PAOs in the A sludge, exactly coinciding with the beta-2 Proteobacteria probe. Sequential FISH and polyphosphate staining of EBPR sludges clearly demonstrated that PAO probe-binding cells contained polyphosphate. Subsequent PAO probe analyses of a number of sludges with various P removal capacities indicated a strong positive correlation between P removal from the wastewater as determined by sludge P content and number of PAO probe-binding cells. We conclude therefore that an important group of PAOs in EBPR sludges are bacteria closely related to Rhodocyclus and Propionibacter.  (+info)

Cultivation of the bacillus of Whipple's disease. (8/597)

BACKGROUND: Whipple's disease is a systemic bacterial infection, but to date no isolate of the bacterium has been established in subculture, and no strain of this bacterium has been available for study. METHODS: Using specimens from the aortic [corrected] valve of a patient with endocarditis due to Whipple's disease, we isolated and propagated a bacterium by inoculation in a human fibroblast cell line (HEL) with the use of a shell-vial assay. We tested serum samples from our patient, other patients with Whipple's disease, and control subjects for the presence of antibodies to this bacterium. RESULTS: The bacterium of Whipple's disease was grown successfully in HEL cells, and we established subcultures of the isolate. Indirect immunofluorescence assays showed that the patient's serum reacted specifically against the bacterium. Seven of 9 serum samples from patients with Whipple's disease had IgM antibody titers of 1:50 or more, as compared with 3 of 40 samples from the control subjects (P<0.001). Polyclonal antibodies against the bacterium were generated by inoculation of the microorganism into mice and were used to detect bacteria in the excised cardiac tissue from our patient on immunohistochemical analysis. The 16S ribosomal RNA gene of the cultured bacterium was identical to the sequence for Tropheryma whippelii identified previously in tissue samples from patients with Whipple's disease. The strain we have grown is available in the French National Collection. CONCLUSIONS: We cultivated the bacterium of Whipple's disease, detected specific antibodies in tissue from the source patient, and generated specific antibodies in mice to be used in the immunodetection of the microorganism in tissues. The development of a serologic test for Whipple's disease may now be possible.  (+info)

Rubrobacter xylanophilus is a thermophilic species of bacteria. It is slightly halotolerant, short rod- and coccus-shaped and gram-positive, with type strain PRD-1T. It is the only true radiation resistant thermopile. It can degrade xylan and hemicellulose. The first strain of the genus Rubrobacter was isolated from gamma-irradiated hot spring water samples by Yoshinaka. This organism was found to be extremely gamma-radiation resistant, with a higher shoulder dose than the canonical radiation resistant species of the genus Deinococcus. The organism stained Gram-positive and was slightly thermophilic with an optimum growth temperature of about 45°C. Carreto, L.; Moore, E.; Nobre, M. F.; Wait, R.; Riley, P. W.; Sharp, R. J.; Da Costa, M. S. (1996). "Rubrobacter xylanophilus sp. nov., a New Thermophilic Species Isolated from a Thermally Polluted Effluent". International Journal of Systematic Bacteriology. 46 (2): 460-465. doi:10.1099/00207713-46-2-460. ISSN 0020-7713. Home - Rubrobacter ...
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Marine-derived Actinobacteria are a source of a broad variety of secondary metabolites with diverse biological activities, such as antibiotics and antitumorals; many of which have been developed for clinical use. Rare Actinobacteria represent an untapped source of new bioactive compounds that have been scarcely recognized. In this study, rare Actinobacteria from marine sediments were isolated from the Valparaíso bay, Chile, and their potential to produce antibacterial compounds was evaluated. Different culture conditions and selective media that select the growth of Actinobacteria were used leading to the isolation of 68 bacterial strains. Comparative analysis of the 16S rRNA gene sequences led to identifying isolates that belong to the phylum Actinobacteria with genetic affiliations to 17 genera: Aeromicrobium, Agrococcus, Arthrobacter, Brachybacterium, Corynebacterium, Dietzia, Flaviflexus, Gordonia, Isoptericola, Janibacter, Microbacterium, Mycobacterium, Ornithinimicrobium, Pseudonocardia,
The taxonomic composition of picoplankton communities profoundly differs in freshwater and marine systems. Cultivation-independent molecular approaches have demonstrated that bacteria from large phylogenetic lineages of typical freshwater microbes, e.g., the β-subdivision of the proteobacteria, are virtually absent in the marine picoplankton (15, 23). For other bacterial lineages the evidence is less conclusive. Comparative analysis of 16S rDNA genes indicate that uncultured members of the class Actinobacteria are ubiquitous in lakes of various trophic state, size or geographic location (16, 36), but actinobacterial sequence types are also known from marine systems (31).. A direct microscopic visualization of freshwater Bacteria by fluorescence in situ hybridization (FISH) with rRNA-targeted oligonucleotide probes is still difficult, and frequently only a low fraction of all picoplankton cells (,50%) can be visualized by FISH (5, 10, 15, 19). We hypothesize that this may be due to high ...
Eggerthella lenta is an anaerobic, non-sporulating, gram positive bacillus in the Coriobacteriaceae family. The aim of this study was to describe the clinical features of the authors cases of E. Lenta bacteraemia, and further define their microbiological characteristics using modern microbiological techniques.
Most Actinobacteria of medical or economic significance are in subclass Actinobacteridae, and belong to the order Actinomycetales. While many of these cause disease in humans, Streptomyces is notable as a source of antibiotics. Of those Actinobacteria not in the Actinomycetales, Gardnerella is one of the most researched. Classification of Gardnerella is controversial, and MeSH catalogues it as both a Gram-positive and Gram-negative organism.[9]. Actinobacteria, especially Streptomyces spp., are recognized as the producers of many bioactive metabolites that are useful to humans in medicine, such as antibacterials,[10] antifungals,[11] antivirals, antithrombotics, immunomodifiers, antitumor drugs, and enzyme inhibitors; and in agriculture, including insecticides, herbicides, fungicides, and growth-promoting substances for plants and animals.[12][13] Actinobacteria-derived antibiotics that are important in medicine include aminoglycosides, anthracyclines, chloramphenicol, macrolide, tetracyclines, ...
Extreme and unusual ecosystems such as isolated ancient caves are considered as potential tools for the discovery of novel natural products with biological activities. Actinobacteria that inhabit these unusual ecosystems are examined as a promising source for the development of new drugs. In this study we focused on the preliminary estimation of fatty acid composition and antibacterial properties of culturable actinobacteria isolated from water surface of underground lakes located in Badzheyskaya and Okhotnichya caves in Siberia. Here we present isolation of 17 strains of actinobacteria that belong to the Streptomyces, Nocardia and Nocardiopsis genera. Using assays for antibacterial and antifungal activities, we found that a number of strains belonging to the genus Streptomyces isolated from Badzheyskaya cave demonstrated inhibition activity against bacteria and fungi. It was shown that representatives of the genera Nocardia and Nocardiopsis isolated from Okhotnichya cave did not demonstrate any tested
Eggerthella lenta ATCC ® 43055™ Designation: MSMC 77-67 TypeStrain=False Application: Quality control strain Susceptibility testing
Eggerthella lenta ATCC ® 43055™ Designation: MSMC 77-67 TypeStrain=False Application: Quality control strain Susceptibility testing
ID A0A0J0UT43_9ACTN Unreviewed; 433 AA. AC A0A0J0UT43; DT 14-OCT-2015, integrated into UniProtKB/TrEMBL. DT 14-OCT-2015, sequence version 1. DT 22-NOV-2017, entry version 10. DE RecName: Full=M18 family aminopeptidase {ECO:0000256,RuleBase:RU004387}; DE EC=3.4.11.- {ECO:0000256,RuleBase:RU004387}; GN ORFNames=IMCC26207_110292 {ECO:0000313,EMBL:KLR60046.1}; OS Actinobacteria bacterium IMCC26207. OC Bacteria; Actinobacteria. OX NCBI_TaxID=1641811 {ECO:0000313,EMBL:KLR60046.1, ECO:0000313,Proteomes:UP000036180}; RN [1] {ECO:0000313,EMBL:KLR60046.1, ECO:0000313,Proteomes:UP000036180} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=IMCC26207 {ECO:0000313,EMBL:KLR60046.1, RC ECO:0000313,Proteomes:UP000036180}; RA Kim S., Cho J.-C.; RT "Genome sequence of freshwater Actinobacteria."; RL Submitted (MAY-2015) to the EMBL/GenBank/DDBJ databases. CC -!- COFACTOR: CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105; CC Evidence={ECO:0000256,RuleBase:RU004387}; CC -!- SIMILARITY: Belongs to the peptidase M18 ...
Valid publication: DEWHIRST (F.E.), PASTER (B.J.), TZELLAS (N.), COLEMAN (B.), DOWNES (J.), SPRATT (D.A.) and WADE (W.G.): Characterization of novel human oral isolates and cloned 16S rDNA sequences that fall in the family Coriobacteriaceae: description of Olsenella gen. nov., reclassification of Lactobacillus uli as Olsenella uli comb. nov. and description of Olsenella profusa sp. nov. Int. J. Syst. Evol. Microbiol., 2001, 51, 1797-1804 ...
Acidimicrobium ferrooxidans gen. nov., sp. nov.: mixed-culture ferrous iron oxidation with Sulfobacillus species. Microbiology, 1996, 142, 785-790 ...
ID A0A076MGV6_AMYME Unreviewed; 538 AA. AC A0A076MGV6; DT 29-OCT-2014, integrated into UniProtKB/TrEMBL. DT 29-OCT-2014, sequence version 1. DT 25-OCT-2017, entry version 27. DE RecName: Full=Chromosomal replication initiator protein DnaA {ECO:0000256,HAMAP-Rule:MF_00377, ECO:0000256,RuleBase:RU000577}; GN Name=dnaA {ECO:0000256,HAMAP-Rule:MF_00377, GN ECO:0000313,EMBL:AIJ20093.1}; GN ORFNames=AMETH_0001 {ECO:0000313,EMBL:AIJ20093.1}; OS Amycolatopsis methanolica 239. OC Bacteria; Actinobacteria; Pseudonocardiales; Pseudonocardiaceae; OC Amycolatopsis. OX NCBI_TaxID=1068978 {ECO:0000313,EMBL:AIJ20093.1, ECO:0000313,Proteomes:UP000062973}; RN [1] {ECO:0000313,EMBL:AIJ20093.1, ECO:0000313,Proteomes:UP000062973} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=239 {ECO:0000313,EMBL:AIJ20093.1, RC ECO:0000313,Proteomes:UP000062973}; RA Tang B.; RT "Whole Genome Sequence of the Amycolatopsis methanolica 239."; RL Submitted (JUL-2014) to the EMBL/GenBank/DDBJ databases. CC -!- FUNCTION: ...
TY - JOUR. T1 - Regulation of specialised metabolites in Actinobacteria - expanding the paradigms. AU - Hoskisson, Paul A. AU - Fernández-Martínez, Lorena T.. N1 - © 2018 Society for Applied Microbiology and John Wiley & Sons Ltd.. PY - 2018/4/6. Y1 - 2018/4/6. N2 - The increase in availability of actinobacterial whole genome sequences has revealed huge numbers of specialised metabolite biosynthetic gene clusters, encoding a range of bioactive molecules such as antibiotics, antifungals, immunosuppressives and anticancer agents. Yet the majority of these clusters are not expressed under standard laboratory conditions in rich media conditions. Emerging data from studies of specialised metabolite biosynthesis suggest that the diversity of regulatory mechanisms is greater than previously thought and these act at multiple levels, through a range of signals such as nutrient limitation, intercellular signalling and competition with other organisms. Understanding the regulation and environmental cues ...
The Antarctic represents a largely untapped source for isolation of new microorganisms with potential to produce bioactive natural products. Actinomycetes are of special interest among such microorganisms as they are known to produce a large number of natural products, many of which have clinical, pharmaceutical or agricultural applications. We isolated, characterized and classified actinomycetes from soil samples collected from different locations on Signy Island, South Orkney Islands, in the maritime Antarctic. A total of 95 putative actinomycete strains were isolated from eight soil samples using eight types of selective isolation media. The strains were dereplicated into 16 groups based on morphology and Amplified Ribosomal DNA Restriction Analysis (ARDRA) patterns. Analysis of 16S rRNA gene sequences of representatives from each group showed that streptomycetes were the dominant actinomycetes isolated from these soils; however, there were also several strains belonging to diverse and rare ...
Actinomycetes also refers as filamentous Actinobacteria and acts as a connecting link between the bacteria and fungi as it shows resemblance with both. In this article, definition, characteristics, classification and economic importance of Actinomycetes are explained.
Secondary metabolites produced by Actinobacteria of tropical soils represent a largely understudied source of novel molecules with relevant applicatio..
Taxonomic hierarchy of Subdivision Actinobacteria Cavalier-Smith 2002. Display of synonyms, alternative taxonomic positions, references, number of subtaxa, and phylogenetic/bibliographic position can be switched on/off. Subtaxa can be ordered by name or phylogenetic/bibliographic position.
Read Plant Growth Promoting Actinobacteria A New Avenue for Enhancing the Productivity and Soil Fertility of Grain Legumes by with Rakuten Kobo. Global yields of legumes have been relatively stagnant for the last five decades, despite the adoption of conventional a...
Fingerprint Dive into the research topics of Detection and molecular characterization of filamentous actinobacteria and thermoactinomycetes present in water-damaged building materials. Together they form a unique fingerprint. ...
Sigma-Aldrich offers abstracts and full-text articles by [Feng Xie, Shengwang Dai, Jinzhao Shen, Biao Ren, Pei Huang, Qiushui Wang, Xueting Liu, Buchang Zhang, Huanqin Dai, Lixin Zhang].
Lineage: cellular organisms; Bacteria; Terrabacteria group; Actinobacteria; Actinobacteria; Bifidobacteriales; Bifidobacteriaceae; ...
PubMed comprises more than 30 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full-text content from PubMed Central and publisher web sites.
Actinomycetes are interesting as a main producer of secondary metabolites and industrial antibiotics from marine environments. A total of 44 strains of actinomycetes were isolated from Caspian Sea sediments at a depth of 5-10 m. Preliminary screening was done using cross-streak method against 2 gram-positive and 4 gram-negative pathogen bacteria. The most potent strains MN2, ...
RN [1] RM PMID:20675471 RT Unexpected abundance of coenzyme F(420)-dependent enzymes in Mycobacterium tuberculosis and other actinobacteria. RA Selengut JD, Haft DH RL J Bacteriol. 2010 Nov;192(21):5788-98. RN [2] RM PMID:16930487 RT Exopolysaccharide-associated protein sorting in environmental organisms: the PEP-CTERM/EpsH system. Application of a novel phylogenetic profiling heuristic. RA Haft DH, Paulsen IT, Ward N, Selengut JD RL BMC Biol. 2006 Aug 24;4:29 ...
Actinomycetes are gram-positive, free-living, saprophytic bacteria widely distributed in soil, water and colonizing plants showing marked chemical and morphological diversity. They are potential source of many bioactive compounds, which have diverse clinical effects and important applications in human medicine. In the present work, we have studied some of the physiological and biochemical characteristics of 36 actinomycete strains isolated from the shola soils of tropical montane forest; a relatively unexplored biodiversity hotspot. Ability of actinomycetes isolates to ferment and produce acids from various carbohydrate sources such as innositol, mannose, sorbitol, galactose, mannitol, xylose, rhamnose, arabinose, lactose and fructose were studied. Almost all the carbon compounds were utilized by one or other actinomycete isolates. The most preferred carbon sources were found to be xylose (94.44%) followed by fructose and mannose (91.66%). Only 41.76% of the isolates were able to ferment ...
Abstract: Actinomycetes are one of the most important groups that produce useful secondary metabolites. They play a great role in pharmaceutical and industrial uses. The search for antibiotic producing soil actinomycetes to inhibit the growth of pathogenic microorganisms has become widespread due to the need for newer antibiotics. The present work was aimed to isolate soil actinomycetes from pinus tree rhizosphere from Doddabetta, Western Ghats, Tamil Nadu, India. Thirty one actinomycetes were isolated based on heterogeneity and stability in subculturing; they were screened against 5 Gram positive and 7 Gram negative bacteria in an in vitro antagonism assay. In the preliminary screening, out of 31 isolates, 12.09% showed good antagonistic activity; 25.08% showed moderate activity; 19.35% showed weak activity and 41.93% showed no activity against the tested bacteria. Among the isolates tested, DPR20 showed good antibacterial activity against both Gram positive and Gram negative bacteria. The ...
This chapter discusses some of the stressors likely to target the cell envelope of Mycobacterium tuberculosis during infection, and the corresponding regulatory elements expressed by the bacterium to counteract this stress. Phylogenetically, M. tuberculosis is a member of the phylum Actinobacteria, which also includes several notable human pathogens, including species of the genera Streptomyces, Corynebacterium, Nocardia, and Rhodococcus. M. tuberculosis is a facultative intracellular pathogen, and its host range is restricted to humans. The bacterium is not normally found free within the environment, so its continued survival within the human population requires that it be transmitted directly from an infected individual with active disease to one that is susceptible to infection. Posttranslational phosphorylation of proteins was traditionally thought to be limited to eukaryotic cells. However, the discovery of two-component signal transduction systems (TCSSs) in bacteria shifted this paradigm to
The composting process is a complex interaction between the waste and the microorganisms within the waste. The microorganisms that carry out this process fall into three groups: bacteria, fungi, and actinomycetes. Actinomycetes are a form of fungi-like bacteria that break down organic matter. The first stage of the biological activity is the consumption of easily available sugars by […]. ...
The composting process is a complex interaction between the waste and the microorganisms within the waste. The microorganisms that carry out this process fall into three groups: bacteria, fungi, and actinomycetes. Actinomycetes are a form of fungi-like bacteria that break down organic matter. The first stage of the biological activity is the consumption of easily available sugars by […]. ...
A new hierarchic classification structure for the taxa between the taxonomic levels of genus and class is Proposed for the actinomycete line of descent as defined by analysis of small subunit (16S) rRNA and genes coding for this molecule (rDNA). While the traditional circumscription of a genus of the actinomycete subphylum is by and large in accord with the 16S rRNA/rDNA-based phylogenetic clustering of these organisms. most of the higher taxa proposed in the past do not take into account the phylogenetic clustering of genera. The rich chemical, morphological and physiological diversity of phylogenetically closely related genera makes the description of families and higher taxa so broad that they become meaningless for the description of the enclosed taxa. Here we present a classification system in which phylogenetically neighboring taxa at the genus level are clustered into families, suborders, orders, subclasses, and a class irrespective of those phenotypec characteristics on which the delineation of
Lineage: cellular organisms; Bacteria; Terrabacteria group; Actinobacteria; Actinobacteria; Pseudonocardiales; Pseudonocardiaceae; Amycolatopsis; Amycolatopsis ...
For a comprehensive guide to actinomycete characterisation see the Compendium of Actinobacteria from Prof. Joachim Wink at the German Collection of Microorganisms & Cell Cultures (DSMZ). This resouce provides protocols for characterising a wide range of features for new isolates, but may also be applicable more broadly for example for phenotyping experiments. The tests include colony morphology, melanin production, salt tolerance, carbon utlilisation and much more. To download the guide please see the link below. DSMZ Compendium of Actinobacteria ...
Methodology/Principal Findings: Here, we report molecular monitoring of the stone-autochthonous microbiota before and at 5, 12 and 30 months after the bio-consolidation treatment (medium/long-term monitoring), employing the well-known molecular strategy of DGGE analyses. Before the bio-consolidation treatment, the bacterial diversity showed the exclusive dominance of Actinobacteria (100%), which decreased in the community (44.2%) after 5 months, and Gamma-proteobacteria (30.24%) and Chloroflexi (25.56%) appeared. After 12 months, Gamma-proteobacteria vanished from the community and Cyanobacteria (22.1%) appeared and remained dominant after thirty months, when the microbiota consisted of Actinobacteria (42.2%) and Cyanobacteria (57.8%) only. Fungal diversity showed that the Ascomycota phylum was dominant before treatment (100%), while, after five months, Basidiomycota (6.38%) appeared on the stone, and vanished again after twelve months. Thirty months after the treatment, the fungal population ...
My main academic interests are in microbial systematics and biotechnology. One of my current research interests is to promote advances in, and enhance the general understanding of the extent of actinobacterial diversity in natural ecosystems and manmade habitats. To this end, innovative strategies are being developed for the selective isolation, dereplication and characterisation of actinomycetes using a range of genotypic and phenotypic procedures. One route that is being adopted for the discovery of novel actinomycetes is to determine the extent of actinobacterial diversity in neglected habitats, such as desert soils and deep sea muds, using both culture-based and culture independent approaches.. Background. My undergraduate and postgraduate studies were at the University of Liverpool where I gained a Ph.D. in 1966 for a research project that introduced me to the wonderful world of microbial diversity. My interests in microbial ecology and microbial systematics were further developed first as ...
Atopobium vaginae is a species of bacteria in the genus of Actinobacteria, in the family Coriobacteriaceae. It is a facultative anaerobic, Gram-positive rod-shaped or elliptical coccobacilli found as single elements or in pairs or short chains. It is typically isolated from 80% of women with bacterial vaginosis and it is implicated in treatment failures. Jovita, M. R.; Collins, M. D.; Sjoden, B.; Falsen, E. (1999). "Characterization of a novel Atopobium isolate from the human vagina: description of Atopobium vaginae sp. nov". International Journal of Systematic Bacteriology. 49 (4): 1573-1576. doi:10.1099/00207713-49-4-1573. ISSN 0020-7713. PMID 10555338. Mastromarino, Paola; Vitali, Beatrice; Mosca, Luciana (2013). "Bacterial vaginosis: a review on clinical trials with probiotics" (PDF). New Microbiologica. 36: 229-238. PMID 23912864. Polatti, Franco (2012). "Bacterial Vaginosis, Atopobium vaginae and Nifuratel". Current Clinical Pharmacology. 7 (1): 36-40. doi:10.2174/157488412799218824. ISSN ...
A taxonomic study was carried out to clarify the taxonomy of representatives of a group of marine actinomycetes previously designated MAR 1 and considered to belong to the family Micromonosporaceae. The organisms had phenotypic properties consistent with their assignment to this taxon. The strains formed a distinct taxon in the 16S rRNA Micromonosporaceae gene tree and shared a range of phenotypic properties that distinguished them from members of all of the genera with validly published names classified in this family. The name proposed for this novel taxon is Salinispora gen. nov. The genus contains two species recognized using a range of genotypic and phenotypic criteria, including comparative 16S-23S rRNA gene spacer region and DNA-DNA relatedness data. The names proposed for these taxa are Salinispora arenicola sp. nov., the type species, and Salinispora tropica sp. nov.; the type strains of these novel species have been deposited in service culture collections as strain CNH-643T (=ATCC BAA-917T
Looking for online definition of Actinobacteria in the Medical Dictionary? Actinobacteria explanation free. What is Actinobacteria? Meaning of Actinobacteria medical term. What does Actinobacteria mean?
Bioprospecting natural products in marine bacteria from fjord environments are attractive due to their unique geographical features. Although, Actinobacteria are well known for producing a myriad of bioactive compounds, investigations regarding fjord derived marine Actinobacteria are scarce. In this study, the diversity and biotechnological potential of Actinobacteria isolated from marine sediments within the Comau fjord, in Northern Chilean Patagonia, were assessed by culture-based approaches. The 16S rRNA gene sequences revealed that members phylogenetically related to the Micrococcaceae, Derrnabacteraceae. Brevibacteriaceae, Corynebacteriaceae. Microbacteriaceae, Dietziaceae, Nocardiaceae, and Streptomycetaceae families were present at the Comau fjord. A high diversity of cultivable Actinobacteria (10 genera) was retrieved by using only five different isolation media. Four isolates belonging to Arthrobacter, Brevibacterium, Corynebacterium and Kocuria genera showed 16S rRNA gene identity ...
International Journal of Evolutionary Biology is a peer-reviewed, Open Access journal that publishes original research articles as well as review articles in all areas of evolutionary biology.
Colin A. B. Davidson ,cabd2 at hermes.cam.ac.uk, wrote in message news:,9n500j$4hn$1 at pegasus.csx.cam.ac.uk,... , Daniel B. Wheeler ,dwheeler at ipns.com, wrote in message , news:6dafee1b.0109010714.23c083f0 at posting.google.com... , (CUT) , , BTW, the above total may sound overestimated by some. But when such , , things as rusts, smuts, ectomycorrhizae, endomycorrhizae, soil, and , , compost actinomycetes are added, , , Whoah there! , , Sorry to seem a pedant, but the actinomycetes are bacteria, not fungi :-) Ill take your word for it Colin. I have not studied the actinomycetes yet. But they sure sound similar to basidiomycetes and ascomycetes. Then, of course, theres the Termite mushrooms, Termitomyces... Sounds like the same to me. Of course, theres a lot of fungi I dont recognize yet. Thats what happens when you dont get a degree in mycology, I guess. , , ,it doesnt seem an overestimate (at , , least to me) at all. Then you have the newly discovered endophytic , , fungi, found ...
Similarly to their terrestrial relatives, marine microbes are a rich source of bioactive metabolites (antibiotics, antitumor drugs) and enzymes with different applications. For instance, cultivation of a marine actinomycete known as Salinispora tropica yielded a number of novel metabolites, not found before. One of these compounds, salinosporamide A, has antitumor properties and is currently being tested in humans for the treatment of cancer. Sequencing the genome of Salinispora tropica unveiled a number of genes coding for the synthesis of 17 potential metabolites; most of these compounds had not been detected in previous culturing of the microbe. Then, the researchers used the genetic information to guide a new chemical analysis of Salinispora cultures. The analysis uncovered an additional, novel compound (salinilactam), which had a structure corresponding to that deduced from the DNA sequence ...
Reference: EUZÉBY (J.P.) and TINDALL (B.J.): Nomenclatural type of orders: corrections necessary according to Rules 15 and 21a of the Bacteriological Code (1990 Revision) and designation of appropriate nomenclatural types of classes and subclasses. Request for an Opinion. Int. J. Syst. Evol. Microbiol. 2001, 51, 725-727 ...
In the era where large whole genome bacterial data sets are generated routinely, rapid and accurate molecular systematics is becoming increasingly important. However, 16S ribosomal RNA sequencing does not always offer sufficient resolution to discriminate between closely related genera. The SsgA-like proteins (SALPs) are developmental regulatory proteins in sporulating actinomycete, whereby SsgB actively recruits FtsZ during sporulation-specific cell division. Here we present a novel method to classify actinomycetes, based on the extraordinary way the SsgA and SsgB proteins are conserved. The almost complete conservation of the SsgB amino acid sequence between members of the same genus, and its high divergence even between closely related genera, provides high quality data for the classification of morphologically complex actinomycetes. Our analysis validates Kitasatospora as a sister genus to Streptomyces in the family Streptomycetaceae and suggests that Micromonospora, Salinispora and ...
Construction of a D-valine sensor using D-amino acid oxidase of Rubrobacter xylanophilus, Journal of Technology and Education, 2016/12/01, Katsumi TAKAYAMA, Chisato SAKAMOTO, Shouji TAKAHASHI, Katsumasa ABE, Ayano HIROBE, and Takeji KOSHIGIRI. ...
Researchers found that there was no significant difference between groups for body weight gain, overall caloric intake, body fat, lean mass, or overall adiposity index. Rats that consumed sugar water consumed less of the solid food. As a result of this well-established compensatory behavior in Sprague-Dawley rats, all three sugar groups consumed a significantly lower percentage of energy from fat and protein compared to the control.. The 16s rRNA sequencing of fecal samples taken at post-natal day 80 revealed a distinct clustering pattern when comparing the sugar to non-sugar fed rats. Interestingly, when comparing the 3 different fructose-to-glucose ratio groups, there was no distinct clustering pattern observed. Researchers detail a number of shifts in the microbiome at the phylum, class, order, family, and genus level. For example, at the phylum level, Proteobacteria and Actinobacteria were elevated in the sugar consuming groups. At the class level, Actinobacteria, Bacilli, Alpha-, Beta- and ...
Proteome IDi ,p>The proteome identifier (UPID) is the unique identifier assigned to the set of proteins that constitute the ,a href="http://www.uniprot.org/manual/proteomes_manual">proteome,/a>. It consists of the characters UP followed by 9 digits, is stable across releases and can therefore be used to cite a UniProt proteome.,p>,a href=/help/proteome_id target=_top>More...,/a>,/p> ...
Proteome IDi ,p>The proteome identifier (UPID) is the unique identifier assigned to the set of proteins that constitute the ,a href="http://www.uniprot.org/manual/proteomes_manual">proteome,/a>. It consists of the characters UP followed by 9 digits, is stable across releases and can therefore be used to cite a UniProt proteome.,p>,a href=/help/proteome_id target=_top>More...,/a>,/p> ...
The gut microbiome uses a number of diverse mechanisms to alter the disposition, efficacy and toxicity of drugs and xenobiotics as follows (Carmody and Turnbaugh, 2014; Klaassen and Cui, 2015): 1) The gut microbiota may express enzymes that either metabolically activate or inactivate drugs. For example, sulfalazine used to treat gut inflammation is converted to its pharmacologically active form, 5-amino 5-salicylic acid by microbial enzymes. In contrast, digoxin is inactivated by a "cardiac glycoside" expressed by Eggerthella lenta. 2) The drug may be sequestered by direct binding to the bacterial organism. An example here is the sequestration of L-DOPA by Helicobacter pylori. 3) The drug may be metabolically reactivated by microbially expressed enzymes. A good example of this mechanism is provided by the chemotherapeutic drug irinotecan (also called CPT-11) (Wallace et al., 2010). In the liver, irinotecan is metabolically inactivated via glucuronidation. Within the intestines, however, it is ...
BIOMEDICUS GEL CU SARE DE BAZNA 250 ML gel cu sare de bazna , extract de tataneasa , scoarta de salcie , brusture si salvie.   Sarea de bazna - este extrasa de la mare adancime din subsolul satiunii Bazna, jud.Mures. Sarea este obtinuta prin fierbarea si evaporarea apelor minerale bogate in cloruri de natriu,potasiu,magneziu, calciu iodura de brom si de natriu. Sarea de bazna este indicata in: reumatism, artorza , poliartrita, discopatii, mialgii, hipertiroidie, leucoplazie. Tataneasa extern este considerata un adevarat panaceu, deoarece alina inflamatiile si grabeste vindecarea in dermatoze, inchide si vindeca rapid plagile,grabeste procesul de refacere a epidermei dupa arsuri, face sa se retraga tumorile exteriorizate, reface rapid tesuturile dupa contuzii si traumatisme. Unul din cele mai active principii ale tatanesei este alantoina, avand efecte antiinflamatoare, antitumorale si favorizeaza refacerea tesuturilor. Extractul de scoarta de Salcie , aspirina naturala
The Actinobacteria. Bergey's Manual of Systematic Bacteriology. 4 (2nd ed.). New York: Springer. p. 1750. ISBN 978-0-387-95043- ... The Actinobacteria Bergey's Manual Trust was established in 1936 to sustain the publication of Bergey's Manual of Determinative ...
Like all Actinobacteria, it is gram-positive and with a high CG content (69%). It is rod/coccoid shaped bacterium whose main ... The Actinobacteria. Bergey's Manual of Systematic Bacteriology. 4 (2nd ed.). New York: Springer. p. 1750. ISBN 978-0-387-95043- ... Aestuariimicrobium is a singleton genus in the phylum Actinobacteria (Bacteria), whose sole member, namely Aestuariimicrobium ...
Actinobacteria, Firmicutes, Thermotogae, Chloroflexi). The presence of this CSI in all sequenced species of conventional ...
The high G + C phylum was made up of the Actinobacteria and the low G + C phylum contained the Firmicutes. The Actinobacteria ... The (low G + C) Firmicutes, have a 45-60% GC content, but this is lower than that of the Actinobacteria. Although bacteria are ... Actinobacteria, Firmicutes, Thermotogae, Chloroflexi, etc.). The presence of this CSI in all sequenced species of conventional ...
nov., a moderately halotolerant Actinobacteria". International journal of systematic and evolutionary microbiology. 64 (Pt 7): ...
... is derived from marine actinobacteria. In preliminary laboratory research, it has shown activity against Bacillus ...
Proposal for a new hierarchic classification system, Actinobacteria classis nov. Int. J. Syst. Bacteriol., 1997, 47:479-491. ... "An update of the structure and 16S rRNA gene sequence-based definition of higher ranks of the class Actinobacteria, with the ... "Road map of the phylum Actinobacteria". Bergey's Manual® of Systematic Bacteriology. p. 1. doi:10.1007/978-0-387-68233-4_1. ... "Phylogenetic Framework and Molecular Signatures for the Main Clades of the Phylum Actinobacteria". Microbiology and Molecular ...
... delineating them from other Actinobacteria. The Coriobacteriia are an early branching lineage within the Actinobacteria phylum ... Gao B, Gupta RS (2005). "Conserved indels in protein sequences that are characteristic of the phylum Actinobacteria". Int J ... The Coriobacteriia are a class of Gram-positive bacteria within the Actinobacteria phylum. Species within this group are ... Gao B, Gupta RS (2012). "Phylogenetic framework and molecular signatures for the main clades of the phylum Actinobacteria". ...
Actinobacteria are gram-positive bacteria, and they are found in the soil. In this phylum, Streptomyces is the largest genus of ... Streptomyces are of the Actinobacteria class. Streptomyces have been an organism of study in biological research on MHB. One ...
They are members of the actinobacteria. Parte, A.C. "Cellulomonas". www.bacterio.net. Glazer AN, Nikaido H (2007) Microbial ...
... is a species of actinobacteria. It produces the novel antibiotic daptomycin (US trade name: Cubicin). ...
The Jonesiaceae are a monotypic Actinobacteria family. The currently accepted taxonomy is based on the List of Prokaryotic ...
... is a species of actinobacteria. It produces the immunosuppressive drug tacrolimus. Pritchard D (2005 ...
Actinobacteria#Phylogeny, shows about 20 species See the NCBI webpage on Actinomycetales Data extracted from the "NCBI Taxonomy ... The Actinomycetales are an order of Actinobacteria. A member of the order is often called an actinomycete. The actinomycetes ...
nov.: heterotrophic, iron-oxidizing, extremely acidophilic actinobacteria". International Journal of Systematic and ...
Stevenson, A; Hallsworth, JE (December 2014). "Water and temperature relations of soil Actinobacteria". Environmental ...
Actinobacteria : application in bioremediation and production of. [S.l.]: Crc Press. ISBN 1-4665-7873-4. CS1 maint: Extra text ...
... is a species of Actinobacteria. Different strains of S. fradiae are known to produce the antibiotics ...
... is a species of actinobacteria. It produces chemotherapeutic drug mitomycin C. http://www.uniprot.org/ ...
A. italicus belongs to the phylum Actinobacteria. It is most closely related to Actinoplanes couchii with 98.9% similarity ...
Typical bacterial taxa are actinobacteria, bacteroidetes and betaproteobacteria. Overall, at such high lakes only a limited ...
Kitasatospora, an Actinobacteria genus named after Kitasato Shibasaburō. Satoshi Ōmura Shibasaburo Kitasako - Nomination Howard ...
Examples of such anaerobes include fusobacterium and actinobacteria. S. mutans and other anaerobes are the initial colonisers ...
Actinobacteria Holin Lysin Transporter Classification Database Petrovski, Steve; Seviour, Robert J.; Tillett, Daniel (2011-06- ...
... is a genus in the phylum Actinobacteria (Bacteria). The name Actinomycetospora derives from: New Latin noun ...
... three sequences from Actinobacteria, and a Cyanobacterium. Fluorescence in situ hybridization (FISH), however, demonstrated ...
TY - JOUR. T1 - TrpM, a Small Protein Modulating Tryptophan Biosynthesis and Morpho-Physiological Differentiation in Streptomyces coelicolor A3(2). AU - Puglia, Anna Maria. AU - Botta, Luigi. AU - Giardina, Anna. AU - Gallo, Giuseppe. AU - Sutera, Alberto. AU - Palazzotto, Emilia. AU - Scaloni, Andrea. AU - Renzone, Giovanni. AU - Palazzotto, Emilia. PY - 2016. Y1 - 2016. N2 - In the model actinomycete Streptomyces coelicolor A3(2), small open reading frames encoding proteins with unknown functions were identified in several amino acid biosynthetic gene operons, such as SCO2038 (trpX) in the tryptophan trpCXBA locus. In this study, the role of the corresponding protein in tryptophan biosynthesis was investigated by combining phenotypic and molecular analyses. The 2038KO mutant strain was characterized by delayed growth, smaller aerial hyphae and reduced production of spores and actinorhodin antibiotic, with respect to the WT strain. The capability of this mutant to grow on minimal medium was ...
Actinobacteria have high guanine and cytosine content in their DNA. The G+C content of Actinobacteria can be as high as 70%, ... The Actinobacteria are a phylum of Gram-positive bacteria. They can be terrestrial or aquatic. They are of great economic ... Some soil actinobacteria (such as Frankia) live symbiotically with the plants whose roots pervade the soil, fixing nitrogen for ... Streptomyces and other actinobacteria are major contributors to biological buffering of soils. They are also the source of many ...
"Draft genome sequences for four Actinobacteria strains OK006 OK074 OV450 and OV320.". Brown S.D., Utturkar S.M., Klingeman D.M. ... This proteome is part of the Actinobacteria bacterium OK006 pan proteome (fasta) ...
"Genome sequence of freshwater Actinobacteria.". Kim S., Cho J.-C.. Submitted (MAY-2015) to the EMBL/GenBank/DDBJ databases ...
Actinobacteria have high guanine and cytosine content in their DNA.[14] The G+C content of Actinobacteria can be as high as 70 ... Class Actinobacteria Stackebrandt et al. 1997 (Actinobacteridae Stackebrandt et al. 1997 emend. Zhi et al. 2009) *Species ?" ... The Actinobacteria are a phylum of Gram-positive bacteria. They can be terrestrial or aquatic.[1] They are of great economic ... Some soil actinobacteria (such as Frankia) live symbiotically with the plants whose roots pervade the soil, fixing nitrogen for ...
actinobacterium synonyms, actinobacterium pronunciation, actinobacterium translation, English dictionary definition of ... ac·tin·o·bac·ter·i·a Any of various gram-positive bacteria of the phylum Actinobacteria, which includes bacteria that live in ... actinobacterium. Also found in: Medical, Wikipedia.. Related to actinobacterium: Actinomycetes, Verrucomicrobia. ac·tin·o·bac· ... Actinobacterium - definition of actinobacterium by The Free Dictionary https://www.thefreedictionary.com/actinobacterium ...
Molecular analysis of the filamentous actinobacteria Frankiais laborious because of the slow growth rate and required biomass ... Bassi CA, Benson DR (2007) Growth characteristics of the slow-growing actinobacterium Frankia sp. strain Ccl3 on solid media. ... In: Rosenberg EDE, Lory S, Stackebrandt E, Thompson F (eds) The prokaryote-actinobacteria. Springer, Berlin, pp 339-356. https ... Molecular analysis of the filamentous actinobacteria Frankia is laborious because of the slow growth rate and required biomass ...
Actinobacteria. Actinobacteria are a group of Gram-positive bacteria with high guanine and cytosine content. They can be ... Actinobacteria is one of the dominant phyla of the bacteria.. Use of the ferric uptake regulator (fur) has been suggested for ...
ac·tin·o·bac·ter·i·a, Any of various gram-positive bacteria of the phylum Actinobacteria, which includes bacteria that live in ... actinobacterium. ac·tin·o·bac·ter·i·um. noun. pl. ac·tin·o·bac·ter·i·a, Any of various gram-positive bacteria of the phylum ... Origin of actinobacterium. From New Latin Actīnobactēria phylum name Actīnomykēs type genus of the phylum ; see actinomyces . ... How would you define actinobacterium? Add your definition here.. Please enable JavaScript to view the comments powered by ...
To date, the role and diversity of ICEs in Actinobacteria have received little attention. Putative ICEs were searched for in ... 17 ICEs were found in Actinobacteria from the genus Frankia, globally important nitrogen-fixing microorganisms that establish ... in Actinobacteria a single DNA FtsK/SpoIIIE-like translocation protein is required. ... 275 genomes of Actinobacteria using HMM-profiles of proteins involved in ICE maintenance and transfer. These exhaustive ...
Isolate MWH-Uga1 was cultivated prior to this study from a freshwater pond in Uganda and belongs to a group of Actinobacteria ... On the basis of these findings, and many studies that show Actinobacteria are common inhabitants of lakes, we predicted that ... Actinorhodopsin genes discovered in diverse freshwater habitats and among cultivated freshwater Actinobacteria.. Sharma AK1, ... ActR genes were also discovered present in numerous mixed cultures containing freshwater Actinobacteria and among environmental ...
Pages in category "Actinobacteria". The following 166 pages are in this category, out of 166 total. ... Retrieved from "https://www.wikidoc.org/index.php?title=Category:Actinobacteria&oldid=161160" ...
Unexpected abundance of coenzyme F(420)-dependent enzymes in Mycobacterium tuberculosis and other actinobacteria.. Selengut JD1 ... Unexpected Abundance of Coenzyme F420-Dependent Enzymes in Mycobacterium tuberculosis and Other Actinobacteria ... Unexpected Abundance of Coenzyme F420-Dependent Enzymes in Mycobacterium tuberculosis and Other Actinobacteria ... Unexpected Abundance of Coenzyme F420-Dependent Enzymes in Mycobacterium tuberculosis and Other Actinobacteria ...
Among these, little survey exists on the diversity of Actinobacteria in arid areas, which are often adapted to relatively high ... Among these, little survey exists on the diversity of Actinobacteria in arid areas, which are often adapted to relatively high ... Bioprospecting of extremophilic Actinobacteria through mining untapped strains and avoiding resiolation of known biomolecules ... In addition, numerous biologically active small molecules are expected to be discovered from arid adapted Actinobacteria in the ...
Actinobacteria on the other hand shows important bioactive substances. ... Actinobacteria are gram-positive bacteria that can be found in both aquatic and terrestrial environment. This kind of bacteria ... Isolation of Antimicrobial Producing Actinobacteria from Soil Samples. Actinobacteria is a gram-positive that mostly found in ... Actinobacteria is much like fungi aiding in the decomposition of organic matter from the dead organisms. Because of these, the ...
Read Plant Growth Promoting Actinobacteria A New Avenue for Enhancing the Productivity and Soil Fertility of Grain Legumes by ... Plant Growth Promoting Actinobacteria A New Avenue for Enhancing the Productivity and Soil Fertility of Grain Legumes by ...
Actinobacteria explanation free. What is Actinobacteria? Meaning of Actinobacteria medical term. What does Actinobacteria mean? ... Looking for online definition of Actinobacteria in the Medical Dictionary? ... redirected from Actinobacteria). Also found in: Dictionary, Thesaurus, Encyclopedia, Wikipedia.. Related to Actinobacteria: ... Actinobacteria abundance was found to be increasing in the burned sites (Table 4).. Changes of ground vegetation, soil chemical ...
Sen A, Daubin V, Abrouk D, Gifford I, Berry AM, Normand P (2014) Phylogeny of the class Actinobacteria revisited in the light ... In the present study, we analyzed the PAS domains found in the proteomes of several actinobacteria representing a variety of ... Characterization of PAS domains in Frankia and selected Actinobacteria and their possible interaction with other co-domains for ... Gao B, Gupta RS (2012) Phylogenetic framework and molecular signatures for the main clades of the phylum Actinobacteria. ...
Rare Actinobacteria represent an untapped source of new bioactive compounds that have been scarcely recognized. In this study, ... Rare Actinobacteria represent an untapped source of new bioactive compounds that have been scarcely recognized. In this study, ... Comparative analysis of the 16S rRNA gene sequences led to identifying isolates that belong to the phylum Actinobacteria with ... Comparative analysis of the 16S rRNA gene sequences led to identifying isolates that belong to the phylum Actinobacteria with ...
... since new taxa of marine actinobacteria can be found, and thus possible new metabolites. Actinobacteria are in the foreground ... This study shows a remarkable culturable diversity of actinobacteria, associated to marine environments along Chile. ... Isolation of Actinobacteria. 2.3.1. Isolation Media. For the isolation of actinobacteria, different media were used (Table 1). ... most of the so-called rare actinobacteria are present (Figure 2a). Rare actinobacteria are those strains that are less likely ...
Exploiting Actinobacteria genomes. Actinobacteria are ubiquitously distributed in both aquatic and terrestrial ecosystems and ... The team expects that this expansion of the genomic coverage of the Actinobacteria will also help researchers resolve the ... Next to Proteobacteria and Firmicutes, Actinobacteria constitute the third most populated phylum among the Bacteria. This ... project calls for sequencing the genomes of 1,000 environmental isolates (type and reference strains) of Actinobacteria and to ...
An actinobacterium closely related to S. arenicola, a known producer of the antimycobacterial rifamycins, was coisolated from ... Marine sponges are known to harbor diverse associated bacteria within their tissues, including actinobacteria (Webster et al., ... The coisolation of the antimycobacterial actinobacterium S. arenicola with mycobacteria from the same specimen of A. ... 2010) Culture-dependent and culture-independent diversity of Actinobacteria associated with the marine sponge Hymeniacidon ...
Here we explore if Actinobacteria potentially play a … ... We sampled for Actinobacteria from 30 fungus-growing termite ... Exploring the Potential for Actinobacteria as Defensive Symbionts in Fungus-Growing Termites Microb Ecol. 2012 May;63(4):975-85 ... Actinobacteria were found throughout all sampled nests and colony parts and, phylogenetically, they are interspersed with ... A more detailed bioassay on 53 isolates, to test the specificity of antibiotics, showed that many Actinobacteria inhibit both ...
Actinobacteria Stackebrandt et al. 1997, classis nov. Type order: not given. Etymology: Gr. n. aktis -inos, a ray, beam; Gr. n ... Class Actinobacteria. Warning: In the List of Prokaryotic names with Standing in Nomenclature, an arrow (→) only indicates the ... n. Actinobacteria, actinomycete group of bacteria of diverse morphological properties. Valid publication: STACKEBRANDT (E.), ... Note: According to Rules 15, 22 and 27(3), the class Actinobacteria is illegitimate because it was proposed without the ...
  • Bioprospecting of extremophilic Actinobacteria through mining untapped strains and avoiding resiolation of known biomolecules is among the most promising strategies for this purpose. (frontiersin.org)
  • In terms of clinical significance, the genome sequences for certain strains of each genus were recently decoded and have given insight into how Actinobacteria adapt within the human body. (omegabiomics.com)
  • Ninety actinobacteria strains isolated at contrasting soil sites were characterized phylogenetically by 16S rRNA gene, for presence of erm and ABC transporter resistance genes and antibiotic production. (beds.ac.uk)
  • In the present study, we analyzed the PAS domains found in the proteomes of several actinobacteria representing a variety of niches. (springer.com)
  • The aim of this study was to isolate, characterise and screen novel actinobacteria for industrially relevant enzymes including hydantoinases. (uwc.ac.za)
  • Amylase, lipase, cellulase are some examples of enzymes isolated from Actinobacteria and currently used in the global market ( Sathya and Ushadevi, 2014 ). (geneticsmr.org)
  • STACKEBRANDT (E.), RAINEY (F.A.) and WARD-RAINEY (N.L.): Proposal for a new hierarchic classification system, Actinobacteria classis nov. (bacterio.net)
  • In this study, rare Actinobacteria from marine sediments were isolated from the Valparaíso bay, Chile, and their potential to produce antibacterial compounds was evaluated. (frontiersin.org)
  • According to Rules 15, 22 and 27(3), the class Actinobacteria is illegitimate because it was proposed without the designation of a nomenclatural type. (bacterio.net)
  • always resulted in an immediate bloom of a single phylotype population of members of the class Actinobacteria (Ac1). (asm.org)
  • New primers for the class Actinobacteria: application to marine and terrestrial environments. (kent.ac.uk)
  • In this study, we redesigned and evaluated primers for the class Actinobacteria. (kent.ac.uk)
  • Nocardioides dokdonensis , belonging to the class Actinobacteria , was first isolated from sand sediment of a beach in Dokdo, Korea, in 2005. (biomedcentral.com)
  • Twelve percent of endophytic actinobacteria was the possibility of discovering novel species from both rice cultivars. (gla.ac.uk)
  • Our findings revealed that seed phytochemicals of pigmented rice (e.g., anthocyanin, γ‐oryzanol, phytate, antioxidants, and content of amylose) were effectors, shaping the community structures and biofunctions of endophytic actinobacteria. (gla.ac.uk)
  • Here we propose to screen the collection of actinobacteria (created at the Department of Genetics and Bioechnology of Ivan Franko National University of Lviv (DGB-IFNUL), Ukraine) against six of the most notorious pathogens. (treefund.org)
  • Actinobacteria have assumed highly variable lifestyles, including pathogens (e.g. (omegabiomics.com)
  • The present study aimed to characterize sixty-nine Actinobacteria isolated from compost and tropical soils using morphological, biochemical, and molecular methods. (geneticsmr.org)
  • In the present study, morphological traits, enzymatic activities, and partial sequencing of the 16S rRNA gene were used for characterizing Actinobacteria isolated from Brazilian tropical soils. (geneticsmr.org)
  • Actinobacteria abundance was found to be increasing in the burned sites (Table 4). (thefreedictionary.com)
  • We examined abundance, bioactivity, and endophytism of cultivable actinobacteria isolated from plant interiors of two Thai pigmented rice cultivars: Hom Nin (HN) rice and Luem Pua (LP) glutinous rice. (gla.ac.uk)
  • Actinobacteria are in the foreground due to their versatile production of secondary metabolites that present various biological activities, such as antibacterials, antitumorals and antifungals. (mdpi.com)
  • Secondary metabolites produced by Actinobacteria of tropical soils represent a largely understudied source of novel molecules with relevant application in medicine, pharmaceutical and food industries, agriculture, and environmental bioremediation. (geneticsmr.org)
  • Thus, the understudied Actinobacteria from tropical soils may represent a promising new source of secondary metabolites for many purposes. (geneticsmr.org)
  • The book also covers the bioactive secondary metabolites obtained from actinobacteria and describes the application of microorganism (Actinobacteria) in plant growth promotion and in environmental cleanup. (allebookstores.com)
  • Finally, the book describes the biocontrol aspects of actinobacteria and how they can control fungal phytopathogens and the production of secondary metabolites. (allebookstores.com)
  • and the 16S rDNA sequence of actinobacterium was deposited in KW-2449 NCBI (Accession No. "type":"entrez-nucleotide" attrs :"text":"KC179795″ term_id :"443501400″ term_text :"KC179795″KC179795). (world-of-links.com)
  • Rather than pharmaceutically active metabolites, molecules with protection activity against drying such as Ectoin and Hydroxyectoin with potential application in industry and agriculture have also been identified from xerophilic Actinobacteria . (frontiersin.org)
  • Hoskisson, PA & Fernández-Martínez, LT 2018, ' Regulation of specialised metabolites in Actinobacteria - expanding the paradigms ', Environmental Microbiology Reports , pp. 1-21. (strath.ac.uk)
  • Here we provide an overview of novel regulatory mechanisms that act in physiological, global, and cluster specific regulatory manners on biosynthetic pathways in Actinobacteria and consider these alongside their ecological and evolutionary implications. (strath.ac.uk)