Dictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.Aerobiosis: Life or metabolic reactions occurring in an environment containing oxygen.Dictionaries, ChemicalOxygen: An element with atomic symbol O, atomic number 8, and atomic weight [15.99903; 15.99977]. It is the most abundant element on earth and essential for respiration.Anaerobiosis: The complete absence, or (loosely) the paucity, of gaseous or dissolved elemental oxygen in a given place or environment. (From Singleton & Sainsbury, Dictionary of Microbiology and Molecular Biology, 2d ed)Free Radicals: Highly reactive molecules with an unsatisfied electron valence pair. Free radicals are produced in both normal and pathological processes. They are proven or suspected agents of tissue damage in a wide variety of circumstances including radiation, damage from environment chemicals, and aging. Natural and pharmacological prevention of free radical damage is being actively investigated.DictionaryXanthine: A purine base found in most body tissues and fluids, certain plants, and some urinary calculi. It is an intermediate in the degradation of adenosine monophosphate to uric acid, being formed by oxidation of hypoxanthine. The methylated xanthine compounds caffeine, theobromine, and theophylline and their derivatives are used in medicine for their bronchodilator effects. (Dorland, 28th ed)Dictionaries, PharmaceuticMicrobiological Phenomena: Physiological processes and properties of microorganisms, including ARCHAEA; BACTERIA; RICKETTSIA; VIRUSES; FUNGI; and others.Software: Sequential operating programs and data which instruct the functioning of a digital computer.Metagenomics: The genomic analysis of assemblages of organisms.Computer Graphics: The process of pictorial communication, between human and computers, in which the computer input and output have the form of charts, drawings, or other appropriate pictorial representation.Computational Biology: A field of biology concerned with the development of techniques for the collection and manipulation of biological data, and the use of such data to make biological discoveries or predictions. This field encompasses all computational methods and theories for solving biological problems including manipulation of models and datasets.Phylogeny: The relationships of groups of organisms as reflected by their genetic makeup.Internet: A loose confederation of computer communication networks around the world. The networks that make up the Internet are connected through several backbone networks. The Internet grew out of the US Government ARPAnet project and was designed to facilitate information exchange.User-Computer Interface: The portion of an interactive computer program that issues messages to and receives commands from a user.Galaxies: Large aggregates of CELESTIAL STARS; COSMIC DUST; and gas. (From McGraw Hill Dictionary of Scientific and Technical Terms, 6th ed)Metagenome: A collective genome representative of the many organisms, primarily microorganisms, existing in a community.Escherichia coli Proteins: Proteins obtained from ESCHERICHIA COLI.Escherichia coli: A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc.Models, Biological: Theoretical representations that simulate the behavior or activity of biological processes or diseases. For disease models in living animals, DISEASE MODELS, ANIMAL is available. Biological models include the use of mathematical equations, computers, and other electronic equipment.Oxidation-Reduction: A chemical reaction in which an electron is transferred from one molecule to another. The electron-donating molecule is the reducing agent or reductant; the electron-accepting molecule is the oxidizing agent or oxidant. Reducing and oxidizing agents function as conjugate reductant-oxidant pairs or redox pairs (Lehninger, Principles of Biochemistry, 1982, p471).Biofuels: Hydrocarbon-rich byproducts from the non-fossilized BIOMASS that are combusted to generate energy as opposed to fossilized hydrocarbon deposits (FOSSIL FUELS).Reproducibility of Results: The statistical reproducibility of measurements (often in a clinical context), including the testing of instrumentation or techniques to obtain reproducible results. The concept includes reproducibility of physiological measurements, which may be used to develop rules to assess probability or prognosis, or response to a stimulus; reproducibility of occurrence of a condition; and reproducibility of experimental results.Escherichia coli Infections: Infections with bacteria of the species ESCHERICHIA COLI.Metabolic Networks and Pathways: Complex sets of enzymatic reactions connected to each other via their product and substrate metabolites.Systems Biology: Comprehensive, methodical analysis of complex biological systems by monitoring responses to perturbations of biological processes. Large scale, computerized collection and analysis of the data are used to develop and test models of biological systems.Thiopental: A barbiturate that is administered intravenously for the induction of general anesthesia or for the production of complete anesthesia of short duration.Tape Recording: Recording of information on magnetic or punched paper tape.ExplosionsMyxovirus Resistance Proteins: Interferon-induced DYNAMIN-like GTP-binding proteins localized in the cytoplasm, nuclear pore complex and nucleus. They play a role in antiviral defense and immunity.Optical Illusions: An illusion of vision usually affecting spatial relations.Explosive Agents: Substances that are energetically unstable and can produce a sudden expansion of the material, called an explosion, which is accompanied by heat, pressure and noise. Other things which have been described as explosive that are not included here are explosive action of laser heating, human performance, sudden epidemiological outbreaks, or fast cell growth.Audiovisual Aids: Auditory and visual instructional materials.Solubility: The ability of a substance to be dissolved, i.e. to form a solution with another substance. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 6th ed)Diving: An activity in which the organism plunges into water. It includes scuba and bell diving. Diving as natural behavior of animals goes here, as well as diving in decompression experiments with humans or animals.Spheniscidae: The sole family in the order Sphenisciformes, comprised of 17 species of penguins in six genera. They are flightless seabirds of the Southern Hemisphere, highly adapted for marine life.Biology: One of the BIOLOGICAL SCIENCE DISCIPLINES concerned with the origin, structure, development, growth, function, genetics, and reproduction of animals, plants, and microorganisms.Birds: Warm-blooded VERTEBRATES possessing FEATHERS and belonging to the class Aves.Swimming: An activity in which the body is propelled through water by specific movement of the arms and/or the legs. Swimming as propulsion through water by the movement of limbs, tail, or fins of animals is often studied as a form of PHYSICAL EXERTION or endurance.Mountaineering: A sport involving mountain climbing techniques.Altitude Sickness: Multiple symptoms associated with reduced oxygen at high ALTITUDE.Seals, Earless: The family Phocidae, suborder PINNIPEDIA, order CARNIVORA, comprising the true seals. They lack external ears and are unable to use their hind flippers to walk. It includes over 18 species including the harp seal, probably the best known seal species in the world.Flight, Animal: The use of wings or wing-like appendages to remain aloft and move through the air.Altitude: A vertical distance measured from a known level on the surface of a planet or other celestial body.Catalogs, Booksellers'BooksTextbooks as Topic: Books used in the study of a subject that contain a systematic presentation of the principles and vocabulary of a subject.Book SelectionBook Reviews as Topic: Critical analyses of books or other monographic works.Commerce: The interchange of goods or commodities, especially on a large scale, between different countries or between populations within the same country. It includes trade (the buying, selling, or exchanging of commodities, whether wholesale or retail) and business (the purchase and sale of goods to make a profit). (From Random House Unabridged Dictionary, 2d ed, p411, p2005 & p283)Rare BooksBook PricesReference Books, Medical: Books in the field of medicine intended primarily for consultation.Books, Illustrated: Books containing photographs, prints, drawings, portraits, plates, diagrams, facsimiles, maps, tables, or other representations or systematic arrangement of data designed to elucidate or decorate its contents. (From The ALA Glossary of Library and Information Science, 1983, p114)Pravastatin: An antilipemic fungal metabolite isolated from cultures of Nocardia autotrophica. It acts as a competitive inhibitor of HMG CoA reductase (HYDROXYMETHYLGLUTARYL COA REDUCTASES).Nocardiaceae: A family of gram-positive, aerobic actinomycetes found in soil and animal tissue. Some species are the cause of infection in man and animals.Lovastatin: A fungal metabolite isolated from cultures of Aspergillus terreus. The compound is a potent anticholesteremic agent. It inhibits 3-hydroxy-3-methylglutaryl coenzyme A reductase (HYDROXYMETHYLGLUTARYL COA REDUCTASES), which is the rate-limiting enzyme in cholesterol biosynthesis. It also stimulates the production of low-density lipoprotein receptors in the liver.Actinomycetales: An order of gram-positive, primarily aerobic BACTERIA that tend to form branching filaments.Actinomycetaceae: A family of bacteria including numerous parasitic and pathogenic forms.Naphthalenes: Two-ring crystalline hydrocarbons isolated from coal tar. They are used as intermediates in chemical synthesis, as insect repellents, fungicides, lubricants, preservatives, and, formerly, as topical antiseptics.Mevalonic AcidHydroxymethylglutaryl-CoA Reductase Inhibitors: Compounds that inhibit HMG-CoA reductases. They have been shown to directly lower cholesterol synthesis.Hydroxymethylglutaryl CoA Reductases: Enzymes that catalyze the reversible reduction of alpha-carboxyl group of 3-hydroxy-3-methylglutaryl-coenzyme A to yield MEVALONIC ACID.Anticholesteremic Agents: Substances used to lower plasma CHOLESTEROL levels.
(1/3073) Denitrifying Pseudomonas aeruginosa: some parameters of growth and active transport.

Optimal cell yield of Pseudomonas aeruginosa grown under denitrifying conditions was obtained with 100 mM nitrate as the terminal electron acceptor, irrespective of the medium used. Nitrite as the terminal electron acceptor supported poor denitrifying growth when concentrations of less than 15 mM, but not higher, were used, apparently owing to toxicity exerted by nitrite. Nitrite accumulated in the medium during early exponential phase when nitrate was the terminal electron acceptor and then decreased to extinction before midexponential phase. The maximal rate of glucose and gluconate transport was supported by 1 mM nitrate or nitrite as the terminal electron acceptor under anaerobic conditions. The transport rate was greater with nitrate than with nitrite as the terminal electron acceptor, but the greatest transport rate was observed under aerobic conditions with oxygen as the terminal electron acceptor. When P. aeruginosa was inoculated into a denitrifying environment, nitrate reductase was detected after 3 h of incubation, nitrite reductase was detected after another 4 h of incubation, and maximal nitrate and nitrite reductase activities peaked together during midexponential phase. The latter coincided with maximal glucose transport activity.  (+info)

(2/3073) Ferritin mutants of Escherichia coli are iron deficient and growth impaired, and fur mutants are iron deficient.

Escherichia coli contains at least two iron storage proteins, a ferritin (FtnA) and a bacterioferritin (Bfr). To investigate their specific functions, the corresponding genes (ftnA and bfr) were inactivated by replacing the chromosomal ftnA and bfr genes with disrupted derivatives containing antibiotic resistance cassettes in place of internal segments of the corresponding coding regions. Single mutants (ftnA::spc and bfr::kan) and a double mutant (ftnA::spc bfr::kan) were generated and confirmed by Western and Southern blot analyses. The iron contents of the parental strain (W3110) and the bfr mutant increased by 1.5- to 2-fold during the transition from logarithmic to stationary phase in iron-rich media, whereas the iron contents of the ftnA and ftnA bfr mutants remained unchanged. The ftnA and ftnA bfr mutants were growth impaired in iron-deficient media, but this was apparent only after the mutant and parental strains had been precultured in iron-rich media. Surprisingly, ferric iron uptake regulation (fur) mutants also had very low iron contents (2.5-fold less iron than Fur+ strains) despite constitutive expression of the iron acquisition systems. The iron deficiencies of the ftnA and fur mutants were confirmed by Mossbauer spectroscopy, which further showed that the low iron contents of ftnA mutants are due to a lack of magnetically ordered ferric iron clusters likely to correspond to FtnA iron cores. In combination with the fur mutation, ftnA and bfr mutations produced an enhanced sensitivity to hydroperoxides, presumably due to an increase in production of "reactive ferrous iron." It is concluded that FtnA acts as an iron store accommodating up to 50% of the cellular iron during postexponential growth in iron-rich media and providing a source of iron that partially compensates for iron deficiency during iron-restricted growth. In addition to repressing the iron acquisition systems, Fur appears to regulate the demand for iron, probably by controlling the expression of iron-containing proteins. The role of Bfr remains unclear.  (+info)

(3/3073) Molecular characterization of the nitrite-reducing system of Staphylococcus carnosus.

Characterization of a nitrite reductase-negative Staphylococcus carnosus Tn917 mutant led to the identification of the nir operon, which encodes NirBD, the dissimilatory NADH-dependent nitrite reductase; SirA, the putative oxidase and chelatase, and SirB, the uroporphyrinogen III methylase, both of which are necessary for biosynthesis of the siroheme prosthetic group; and NirR, which revealed no convincing similarity to proteins with known functions. We suggest that NirR is essential for nir promoter activity. In the absence of NirR, a weak promoter upstream of sirA seems to drive transcription of sirA, nirB, nirD, and sirB in the stationary-growth phase. In primer extension experiments one predominant and several weaker transcription start sites were identified in the nir promoter region. Northern blot analyses indicated that anaerobiosis and nitrite are induction factors of the nir operon: cells grown aerobically with nitrite revealed small amounts of full-length transcript whereas cells grown anaerobically with or without nitrite showed large amounts of full-length transcript. Although a transcript is detectable, no nitrite reduction occurs in cells grown aerobically with nitrite, indicating an additional oxygen-controlled step at the level of translation, enzyme folding, assembly, or insertion of prosthetic groups. The nitrite-reducing activity expressed during anaerobiosis is switched off reversibly when the oxygen tension increases, most likely due to competition for electrons with the aerobic respiratory chain. Another gene, nirC, is located upstream of the nir operon. nirC encodes a putative integral membrane-spanning protein of unknown function. A nirC mutant showed no distinct phenotype.  (+info)

(4/3073) Combination of fluorescent in situ hybridization and microautoradiography-a new tool for structure-function analyses in microbial ecology.

A new microscopic method for simultaneously determining in situ the identities, activities, and specific substrate uptake profiles of individual bacterial cells within complex microbial communities was developed by combining fluorescent in situ hybridization (FISH) performed with rRNA-targeted oligonucleotide probes and microautoradiography. This method was evaluated by using defined artificial mixtures of Escherichia coli and Herpetosiphon aurantiacus under aerobic incubation conditions with added [3H]glucose. Subsequently, we were able to demonstrate the potential of this method by visualizing the uptake of organic and inorganic radiolabeled substrates ([14C]acetate, [14C]butyrate, [14C]bicarbonate, and 33Pi) in probe-defined populations from complex activated sludge microbial communities by using aerobic incubation conditions and anaerobic incubation conditions (with and without nitrate). For both defined cell mixtures and activated sludge, the method proved to be useful for simultaneous identification and analysis of the uptake of labeled substrates under the different experimental conditions used. Optimal results were obtained when fluorescently labeled oligonucleotides were applied prior to the microautoradiographic developing procedure. For single-cell resolution of FISH and microautoradiographic signals within activated sludge flocs, cryosectioned sample material was examined with a confocal laser scanning microscope. The combination of in situ rRNA hybridization techniques, cryosectioning, microautoradiography, and confocal laser scanning microscopy provides a unique opportunity for obtaining cultivation-independent insights into the structure and function of bacterial communities.  (+info)

(5/3073) Influences of low intensity exercise on body composition, food intake and aerobic power of sedentary young females.

The present study was designed to investigate the influences of aerobic training on the body composition, aerobic power and food intake of sedentary young females in relation to the initial levels of these variables. Thirty one untrained college females (age = 19.8 +/- 0.2 yr, stature = 154.4 +/- 0.8 cm, body mass = 53.3 +/- 1.2 kg, mean +/- SEM) participated in an exercise regimen consisting of 40% of maximum oxygen uptake (VO2max) for 30 minutes per day on a bicycle ergometer 5 times a week in a training period of 12 weeks. Food consumption was ad libitum but the content of daily food intake was recorded accurately throughout the whole training period and analyzed weekly. The average body mass index (BMI) and fat mass relative to body mass (% FM), estimated from the data of skinfold thickness, decreased significantly after the 12 wk training. There were significant negative correlations between the relative changes (% delta s) and initial levels of both body mass (r = -0.447, p < 0.05) and fat mass (r = -0.638, p < 0.05), but the corresponding correlation for lean body mass (LBM) was not significant (r = 0.186, p > 0.05). While the energy intake during the training period did not differ significantly from that during the control period on the average, the % delta value in energy intake between the two periods was negatively correlated to the energy intake during the control period (r = -0.604, p < 0.05). In addition, there were low but significant negative correlations between both the initial levels of BMI and %FM and % delta in energy intake; r = -0.413 (p < 0.05) for BMI and r = -0.393 (p < 0.05) for %FM. However, no significant correlations were found between % delta in energy intake and those in body composition variables (r = 0.116 to 0.237, p > 0.05). On the average VO2max relative to body mass (VO2max/BM) increased significantly, but VO2max relative to LBM (VO2max/LBM) did not. However, not only VO2max/BM but also VO2max/LBM was negatively correlated to the initial level; r = -0.671 (p < 0.05) for VO2max/BM and r = -0.625 for VO2max/LBM. Thus, the present results indicate that whether the body composition, food intake and aerobic power of sedentary young females can be modified by the exercise regimen eliciting 40% of VO2max depends on their initial levels.  (+info)

(6/3073) Activity of disulfiram (bis(diethylthiocarbamoyl)disulphide) and ditiocarb (diethyldithiocarbamate) against metronidazole-sensitive and -resistant Trichomonas vaginalis and Tritrichomonas foetus.

Clinical resistance of Trichomonas vaginalis to metronidazole is best correlated with MIC values measured under aerobic conditions. Under these conditions both disulfiram (bis(diethylthiocarbamoyl)disulphide), and its first mammalian metabolite, ditiocarb (diethyldithiocarbamate), showed high levels of activity against metronidazole-sensitive (disulfiram MIC, 0.1-0.7 microM; ditiocarb MIC, 0.3-9 microM) and -resistant (MICs 0.2-1.3 microM and 1.2-9 microM respectively) isolates. Tritrichomonas foetus was also sensitive-the MICs for seven metronidazole-sensitive isolates were 0.1-1.0 microM for disulfiram and 1.0-6.9 microM for ditiocarb; those for two highly metronidazole-resistant strains were 0.3-1.3 microM and 0.6-6 microM respectively. Under anerobic conditions most strains became highly resistant to both compounds. Surprisingly, disulfiram was consistently more active than ditiocarb.  (+info)

(7/3073) Acid- and base-induced proteins during aerobic and anaerobic growth of Escherichia coli revealed by two-dimensional gel electrophoresis.

Proteins induced by acid or base, during long-term aerobic or anaerobic growth in complex medium, were identified in Escherichia coli. Two-dimensional gel electrophoresis revealed pH-dependent induction of 18 proteins, nine of which were identified by N-terminal sequencing. At pH 9, tryptophan deaminase (TnaA) was induced to a high level, becoming one of the most abundant proteins observed. TnaA may reverse alkalinization by metabolizing amino acids to produce acidic products. Also induced at high pH, but only in anaerobiosis, was glutamate decarboxylase (GadA). The gad system (GadA/GadBC) neutralizes acidity and enhances survival in extreme acid; its induction during anaerobic growth may help protect alkaline-grown cells from the acidification resulting from anaerobic fermentation. To investigate possible responses to internal acidification, cultures were grown in propionate, a membrane-permeant weak acid which acidifies the cytoplasm. YfiD, a homologue of pyruvate formate lyase, was induced to high levels at pH 4.4 and induced twofold more by propionate at pH 6; both of these conditions cause internal acidification. At neutral or alkaline pH, YfiD was virtually absent. YfiD is therefore a strong candidate for response to internal acidification. Acid or propionate also increased the expression of alkyl hydroperoxide reductase (AhpC) but only during aerobic growth. At neutral or high pH, AhpC showed no significant difference between aerobic and anaerobic growth. The increase of AhpC in acid may help protect the cell from the greater concentrations of oxidizing intermediates at low pH. Isocitrate lyase (AceA) was induced by oxygen across the pH range but showed substantially greater induction in acid or in base than at pH 7. Additional responses observed included the induction of MalE at high pH and induction of several enzymes of sugar metabolism at low pH: the phosphotransferase system components ManX and PtsH and the galactitol fermentation enzyme GatY. Overall, our results indicate complex relationships between pH and oxygen and a novel permeant acid-inducible gene, YfiD.  (+info)

(8/3073) Convective oxygen transport and tissue oxygen consumption in Weddell seals during aerobic dives.

Unlike their terrestrial counterparts, marine mammals stop breathing and reduce their convective oxygen transport while performing activities (e.g. foraging, courtship, aggressive interactions, predator avoidance and migration) that require sustained power output during submergence. Since most voluntary dives are believed to remain aerobic, the goal of this study was to examine the potential importance of the dive response in optimizing the use of blood and muscle oxygen stores during dives involving different levels of muscular exertion. To accomplish this, we designed a numerical model based on Fick's principle that integrated cardiac output (Vb), regional blood flow, convective oxygen transport (Q(O2)), muscle oxymyoglobin desaturation and regional rates of oxygen consumption (VO2). The model quantified how the optimal matching or mismatching of QO2 to VO2 affected the aerobic dive limit (ADL). We chose an adult Weddell seal Leptonycotes weddellii on which to base our model because of available data on the diving physiology and metabolism of this species. The results show that the use of blood and muscle oxygen stores must be completed at the same time to maximize the ADL for each level of VO2. This is achieved by adjusting Vb (range 19-94 % of resting levels) and muscle QO2 according to the rate of muscle oxygen consumption (VMO2). At higher values of VMO2, Vb and muscle perfusion must increase to maintain an appropriate QO2/VO2 ratio so that available blood and muscle oxygen stores are depleted at the same time. Although the dive response does not sequester blood oxygen exclusively for brain and heart metabolism during aerobic dives, as it does during forced submersion, a reduction in Vb and muscle perfusion below resting levels is necessary to maximize the ADL over the range of diving VO2 (approximately 2-9 ml O2 min-1 kg-1). Despite the reduction in Vb, convective oxygen transport is adequate to maintain aerobic metabolism and normal function in the splanchnic organs, kidneys and other peripheral tissues. As a result, physiological homeostasis is maintained throughout the dive. The model shows that the cardiovascular adjustments known as the dive response enable the diving seal to balance the conflicting metabolic demands of (1) optimizing the distribution and use of blood and muscle oxygen stores to maximize the ADL over the normal range of diving VO2 and (2) ensuring that active muscle receives adequate oxygen as VMO2 increases.  (+info)

Transition of an Anaerobic Escherichia coli Culture to Aerobiosis: Balancing mRNA and Protein Levels in a Demand-Directed...  Transition of an Anaerobic Escherichia coli Culture to Aerobiosis: Balancing mRNA and Protein Levels in a Demand-Directed...
The facultative anaerobic bacterium Escherichia coli is frequently forced to adapt to changing environmental conditions. One important determinant for metabolism is the availability of oxygen allowing a more efficient metabolism. Especially in large scale bioreactors, the distribution of oxygen is inhomogeneous and individual cells encounter frequent changes. This might contribute to observed yield losses during process upscaling. Short-term gene expression data exist of an anaerobic E. coli batch culture shifting to aerobic conditions. The data reveal temporary upregulation of genes that are less efficient in terms of energy conservation than the genes predicted by conventional flux balance analyses. In this study, we provide evidence for a positive correlation between metabolic fluxes and gene expression. We then hypothesize that the more efficient enzymes are limited by their low expression, restricting flux through their reactions. We define a demand that triggers expression of the demanded enzymes
more infohttps://journals.plos.org/plosone/article?id=10.1371/journal.pone.0158711
Determination of by-product formation and glucose uptake of mutants with linear respiratory chain at different aerobiosis levels  Determination of by-product formation and glucose uptake of mutants with linear respiratory chain at different aerobiosis levels
by-product formation rates and glucose uptake rates of mutants with linear electron transport chain at different aerobiosis ... Dephosphorylation and therefore inactivation of ArcA started at lower aerobiosis levels than in the wild-type strain. Notably, ... Determination of by-product formation and glucose uptake of mutants with linear respiratory chain at different aerobiosis ... Determination of by-product formation and glucose uptake of mutants with linear respiratory chain at different aerobiosis ...
more infohttps://seek.sysmo-db.org/assays/238
Determination of by-product formation and glucose uptake of mutants with linear respiratory chain at different aerobiosis levels  Determination of by-product formation and glucose uptake of mutants with linear respiratory chain at different aerobiosis levels
by-product formation rates and glucose uptake rates of mutants with linear electron transport chain at different aerobiosis ... Dephosphorylation and therefore inactivation of ArcA started at lower aerobiosis levels than in the wild-type strain. Notably, ... Determination of by-product formation and glucose uptake of mutants with linear respiratory chain at different aerobiosis ... Determination of by-product formation and glucose uptake of mutants with linear respiratory chain at different aerobiosis ...
more infohttps://fairdomhub.org/assays/238
Aerobiotic | Article about aerobiotic by The Free Dictionary  Aerobiotic | Article about aerobiotic by The Free Dictionary
Aerobiosis is characteristic of the overwhelming majority of animals, plants, and... Explanation of aerobiotic ... Aerobiosis. (redirected from aerobiotic). Also found in: Dictionary, Thesaurus, Medical. aerobiosis. [‚e·rō‚bi′ō·səs] (biology ... Aerobiosis. life in the presence of free oxygen. Aerobiosis is characteristic of the overwhelming majority of animals, plants, ...
more infohttps://encyclopedia2.thefreedictionary.com/aerobiotic
The concept of lactate threshold. A short review.  The concept of lactate threshold. A short review.
Aerobiosis. Anaerobic Threshold* / physiology. Energy Metabolism. Glycogen / metabolism. Humans. Lactates / blood*, metabolism ...
more infohttp://www.biomedsearch.com/nih/concept-lactate-threshold-short-review/7474995.html
Compact graphical representation of phylogenetic data and metadata with GraPhlAn [PeerJ]  Compact graphical representation of phylogenetic data and metadata with GraPhlAn [PeerJ]
Aerobiosis analysis under aerobic, anaerobic, and microaerobic conditions. The cladogram shows the aerobiosis analysis of the ... aerobiosis directory. The two files represent the taxonomic tree of the HMP project and the results of LEfSe executed on the ...
more infohttps://peerj.com/articles/1029/
Relationships between mean SR and possible driving fact | Open-i  Relationships between mean SR and possible driving fact | Open-i
Relationships between mean SR and possible driving factors among sites.SR represented soil respiration; The driving factors were soil temperature (ST) at 5 cm d
more infohttps://openi.nlm.nih.gov/detailedresult.php?img=PMC3412854_pone.0042354.g007&req=4
Annual SR for the six sites.SR means soil respiration.  | Open-i  Annual SR for the six sites.SR means soil respiration. | Open-i
Annual SR for the six sites.SR means soil respiration. Different letters denote significant differences among means (á = 0.05) as determined by Turkey's
more infohttps://openi.nlm.nih.gov/detailedresult.php?img=PMC3412854_pone.0042354.g006&req=4
Frontiers | A mathematical model of metabolism and regulation provides a systems-level view of how Escherichia coli responds to...  Frontiers | A mathematical model of metabolism and regulation provides a systems-level view of how Escherichia coli responds to...
Anaerobic growth corresponds to an aerobiosis value of 0%. An aerobiosis value of 100% is defined as the steady state with the ... Using the aerobiosis scale, results of different laboratories using different reactors can be compared. The aerobiosis scale ... the citric acid cycle shows the switch from its branched form at low aerobiosis values to the cyclic form at high aerobiosis ... aerobiosis units. The aerobiosis scale allows the reproducible analysis of microaerobic states on the physiological (Alexeeva ...
more infohttps://www.frontiersin.org/articles/10.3389/fmicb.2014.00124/full
Enfermedades infecciosas by María Olazar on Prezi  Enfermedades infecciosas by María Olazar on Prezi
Cultivo y aislamiento en agar sangre a 37º en aerobiosis. Colonias blancas cremosas, lisas brillantes (24hs.). Colonias rojo ...
more infohttps://prezi.com/zhu9oi2dajci/enfermedades-infecciosas/
Large-Scale Phylogenomics of the Lactobacillus casei Group Highlights Taxonomic Inconsistencies and Reveals Novel Clade...  Large-Scale Phylogenomics of the Lactobacillus casei Group Highlights Taxonomic Inconsistencies and Reveals Novel Clade...
... aerobiosis; AE+, aerobiosis with addition of heme and menaquinone. Download TABLE S2, DOCX file, 0.01 MB. ... or aerobiosis (agitation on a rotary shaker at 150 rpm with or without respiration-promoting supplementation with hemin and ...
more infohttps://msystems.asm.org/content/2/4/e00061-17
Morphological record of oxygenic photosynthesis in conical stromatolites | PNAS  Morphological record of oxygenic photosynthesis in conical stromatolites | PNAS
2009) Late Archean molecular fossils from the Transvaal Supergroup record the antiquity of microbial diversity and aerobiosis. ... 2008) Methylhopane biomarker hydrocarbons in Hamersley Province sediments provide evidence for Neoarchean aerobiosis. Earth ...
more infohttps://www.pnas.org/content/106/27/10939.full
Magix audio cleaning lab mx  18  Download  Magix audio cleaning lab mx 18 Download
Aerobiosis Redford harlequins lucratively. Unreposing Welby postured, her Dell Displays By Dell E551c Color Monitor Quick Setup ...
more infohttp://thetechgeek.com/wp-content/uploads/?xrum=magix-audio-cleaning-lab-mx--18-
Buy Lorazepam From Canada  Buy Lorazepam From Canada
Farinaceous Maxfield orientate aerobiosis betroths ingloriously. Renado intermingles defectively. Rubbliest Kalvin homologating ...
more infohttps://childrensdreamfund.org/blog/
For the life of (one) - definition of for the life of (one) by The Free Dictionary  For the life of (one) - definition of for the life of (one) by The Free Dictionary
aerobiosis - life sustained in the presence of air or oxygen. 12.. life - an account of the series of events making up a ...
more infohttp://www.thefreedictionary.com/for+the+life+of+
Coming to life - definition of coming to life by The Free Dictionary  Coming to life - definition of coming to life by The Free Dictionary
aerobiosis - life sustained in the presence of air or oxygen. 12.. life - an account of the series of events making up a ...
more infohttps://www.thefreedictionary.com/coming+to+life
Buoyancy and maximal diving depth in penguins | Journal of Experimental Biology  Buoyancy and maximal diving depth in penguins | Journal of Experimental Biology
Ydenberg, R. C. and Clark, C. W. (1989). Aerobiosis and anaerobiosis during diving by Western Grebes: an optimal foraging ...
more infohttp://jeb.biologists.org/content/205/9/1189
ZFIN Publication: Chibwe et al., 2015  ZFIN Publication: Chibwe et al., 2015
Aerobiosis; Animals; Biodegradation, Environmental; Biological Assay; Chickens (all 18) Aerobiosis; Animals; Biodegradation, ...
more infohttp://zfin.org/ZDB-PUB-150723-2
  • We therefore investigated the ArcA regulon in aerobically growing S. Typhimurium before and after exposure to H 2 O 2 by querying gene expression and other physiological changes in wild type and ΔarcA strains.Results: In the ΔarcA strain, expression of 292 genes showed direct or indirect regulation by ArcA in response to H 2 O 2 , of which 141were also regulated in aerobiosis, but in the opposite direction. (unab.cl)
  • The incubation of the samples withdrawn from the colon was carried out only under aerobiosis at 37[grados]C, since under these conditions the bacteria grew well, foregoing the incubation at 25[grados]C, as Needham (1981) suggests. (thefreedictionary.com)
  • Here we investigate the expression of cylLL and cylLS, the genes that encode the structural subunits of the cytolysin/haemolysin of Enterococcus faecalis, in response to aerobiosis conditions. (uclan.ac.uk)
  • Reporter gene studies revealed that cylLLLS promoter activity was significantly greater (up to 8.6- fold) under anaerobic compared to aerobic conditions throughout batch growth, demonstrating that these genes are regulated in response to the degree of aerobiosis. (uclan.ac.uk)