4-Chloronicotinic acid 10177-29-4 NMR spectrum, 4-Chloronicotinic acid H-NMR spectral analysis, 4-Chloronicotinic acid C-NMR spectral analysis ect.
Sulfur is an essential element for life and the metabolism of organic sulfur compounds plays an important role in the global sulfur cycle. Sulfur occurs in various oxidation states ranging from +6 in sulfate to -2 in sulfide (H2S). Sulfate reduction can occur in both an energy consuming assimilatory pathway and an energy producing dissimilatory pathway. The assimilatory pathway, which is found in a wide range of organisms, produces reduced sulfur compounds for the biosynthesis of S-containing amino acids and does not lead to direct excretion of sulfide. In the dissimilatory pathway, which is restricted to obligatory anaerobic bacterial and archaeal lineages, sulfate (or sulfur) is the terminal electron acceptor of the respiratory chain producing large quantities of inorganic sulfide. Both pathways start from the activation of sulfate by reaction with ATP to form adenylyl sulfate (APS). In the assimilatory pathway [MD:M00176] APS is converted to 3-phosphoadenylyl sulfate (PAPS) and then reduced ...
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Effectof Soil Factors on Net N-Mineralization and Decomposition Rate of Organic Nutrient Sources Abebe Abay Central Ethiopia Environment and Forest
ID RHOPS_1_PE1007 STANDARD; PRT; 528 AA. AC RHOPS_1_PE1007; Q13CE2; DT 00-JAN-0000 (Rel. 1, Created) DT 00-JAN-0000 (Rel. 2, Last sequence update) DT 00-JAN-0000 (Rel. 3, Last annotation update) DE SubName: Full=Peptidase C14, caspase catalytic subunit p20; DE (RHOPS_1.PE1007). GN OrderedLocusNames=RPD_1009; OS RHODOPSEUDOMONAS PALUSTRIS BISB5. OC Bacteria; Proteobacteria; Alphaproteobacteria; Rhizobiales; OC Bradyrhizobiaceae; Rhodopseudomonas. OX NCBI_TaxID=316057; RN [0] RP -.; RG -.; RL -.; CC -!- SEQ. DATA ORIGIN: Translated from the HOGENOM CDS RHOPS_1.PE1007. CC Rhodopseudomonas palustris BisB5, complete genome. CC sequence. CC -!- ANNOTATIONS ORIGIN:Q13CE2_RHOPS CC -!- GENE_FAMILY: HOG000272520 [ FAMILY / ALN / TREE ] DR UniProtKB/Swiss-Prot; Q13CE2; -. DR EMBL; CP000283; ABE38247.1; -; Genomic_DNA. DR RefSeq; YP_568148.1; NC_007958.1. DR ProteinModelPortal; Q13CE2; -. DR STRING; Q13CE2; -. DR GeneID; 4021484; -. DR GenomeReviews; CP000283_GR; RPD_1009. DR KEGG; rpd:RPD_1009; -. DR ...
ID B3Q835_RHOPT Unreviewed; 172 AA. AC B3Q835; DT 02-SEP-2008, integrated into UniProtKB/TrEMBL. DT 02-SEP-2008, sequence version 1. DT 25-OCT-2017, entry version 60. DE RecName: Full=Superoxide dismutase [Cu-Zn] {ECO:0000256,RuleBase:RU000393}; DE EC=1.15.1.1 {ECO:0000256,RuleBase:RU000393}; GN OrderedLocusNames=Rpal_0224 {ECO:0000313,EMBL:ACE98784.1}; OS Rhodopseudomonas palustris (strain TIE-1). OC Bacteria; Proteobacteria; Alphaproteobacteria; Rhizobiales; OC Bradyrhizobiaceae; Rhodopseudomonas. OX NCBI_TaxID=395960 {ECO:0000313,EMBL:ACE98784.1, ECO:0000313,Proteomes:UP000001725}; RN [1] {ECO:0000313,EMBL:ACE98784.1, ECO:0000313,Proteomes:UP000001725} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RC STRAIN=TIE-1 {ECO:0000313,EMBL:ACE98784.1, RC ECO:0000313,Proteomes:UP000001725}; RG US DOE Joint Genome Institute; RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., RA Tice H., Pitluck S., Chain P., Malfatti S., Shin M., Vergez L., RA Lang D., Schmutz J., Larimer F., Land ...
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Blastobacter denitrificans 16S ribosomal RNA gene, partial sequence;tRNA-Ile and tRNA-Ala genes, complete sequence; and 23S ribosomal RNA gene,partial ...
As with similar questions about a tree in the forest or a grain of sand on the beach, it may be hard to imagine that a few inches of rain matters to the deep ocean.
What gives sea air its distinctive scent? A chemical compound called dimethylsulfide. In a new study, WHOI scientists show that the compound may also be used by marine microbes to communicate with one another.
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Chemolithoautotrophic Bacteria von Tateo Yamanaka und Buchbewertungen gibt es auf ReadRate.com. Bücher können hier direkt online erworben werden.
Autotrophic ammonium oxidation in membrane-aerated biofilm reactors (MABRs) can make treatment of ammonium-rich wastewaters more energy-efficient, especially within the context of short-cut ammonium removal. The challenge is to exclusively enrich ammonium-oxidizing bacteria (AOB). To achieve nitritation, strategies to suppress nitrite-oxidizing bacteria (NOB) are needed, which are ideally grounded on an understanding of underlying mechanisms. In this study, a nitrifying MABR was operated under intermittent aeration. During eight months of operation, AOB dominated, while NOB were suppressed. On the basis of dissolved oxygen (DO), ammonium, nitrite, and nitrate profiles within the biofilm and in the bulk, a 1-dimensional nitrifying biofilm model was developed and calibrated. The model was utilized to explore the potential mechanisms of NOB suppression associated with intermittent aeration, considering DO limitation, direct pH effects on enzymatic activities, and indirect pH effects on activity via ...
A membrane-associated nitrite-oxidizing system of Nitrospira moscoviensis was isolated from heat-treated membranes. The four major proteins of the enzyme fraction had apparent molecular masses of 130, 62, 46, and 29 kDa, respectively. The nitrite-oxidizing activity was dependent on the presence of m …
Metabolic network showing the number of O. carboxidovorans proteins identified in each COG category in the current study.Proteins (referred by locus tag number
The application of nitrification-denitrification over nitrite (nitritation-denitritation) with municipal (i.e. diluted and cold (or low-temperature)) wastewater
Lineage: cellular organisms; Bacteria; Proteobacteria; Betaproteobacteria; Burkholderiales; Oxalobacteraceae; Herbaspirillum; Herbaspirillum ...
Publisher: Frontiers Media S.A.. Date Issued: 4/14/16. Abstract: An ammonia-oxidizing bacterium, strain D1FHS, was enriched into pure culture from a sediment sample retrieved in Jiaozhou Bay, a hyper-eutrophic semi-closed water body hosting the metropolitan area of Qingdao, China. Based on initial 16S rRNA gene sequence analysis, strain D1FHS was classified in the genus Nitrosococcus, family Chromatiaceae, order Chromatiales, class Gammaproteobacteria; the 16S rRNA gene sequence with highest level of identity to that of D1FHS was obtained from Nitrosococcus halophilus Nc4T. The average nucleotide identity between the genomes of strain D1FHS and N. halophilus strain Nc4 is 89.5%. Known species in the genus Nitrosococcus are obligate aerobic chemolithotrophic ammonia-oxidizing bacteria adapted to and restricted to marine environments. The optimum growth (maximum nitrite production) conditions for D1FHS in a minimal salts medium are: 50 mM ammonium and 700 mM NaCl at pH of 7.5 to 8.0 and at 37 ...
The biocathodic reduction of nitrate in Microbial Fuel Cells (MFCs) is an alternative to remove nitrogen in low carbon to nitrogen wastewater and relies entirely on microbial activity. In this paper the community composition of denitrifiers in the cathode of a MFC is analysed in relation to added electron acceptors (nitrate and nitrite) and organic matter in the cathode. Nitrate reducers and nitrite reducers were highly affected by the operational conditions and displayed high diversity. The number of retrieved species-level Operational Taxonomic Units (OTUs) for narG, napA, nirS and nirK genes was 11, 10, 31 and 22, respectively. In contrast, nitrous oxide reducers remained virtually unchanged at all conditions. About 90% of the retrieved nosZ sequences grouped in a single OTU with a high similarity with Oligotropha carboxidovorans nosZ gene. nirS-containing denitrifiers were dominant at all conditions and accounted for a significant amount of the total bacterial density. Current production ...
Nitrifying biofilters degrading the four regulated trihalomethanes (THMs) trichloromethane (TCM), bromodichloromethane (BDCM), dibromochloromethane (DBCM), and tribromomethane (TBM) -were analyzed for the presence and activity of ammonia-oxidizing bacteria (AOB). Biofilter performance and batch kinetic tests performed on biofilm removed during backwashing verified that the biofilters contained organisms capable of degrading the four regulated THMs commonly found in treated drinking water. Quantitative PCR (qPCR) and amoA sequence analysis provided evidence that the Nitrosomonas oligotropha was the only AOB present. N. oligotropha is typically associated with drinking water distribution system AOB communities, and their presence in these biofilters might indicate that their tolerance to THMs is another reason for their dominance in chloraminated drinking water systems. ...
Carbon fixation by chemoautotrophic microorganisms in the dark ocean has a major impact on global carbon cycling and ecological relationships in the oceans interior, but the relevant taxa and energy sources remain enigmatic. We show evidence that nitrite-oxidizing bacteria affiliated with the Nitrospinae phylum are important in dark ocean chemoautotrophy. Single-cell genomics and community metagenomics revealed that Nitrospinae are the most abundant and globally distributed nitrite-oxidizing bacteria in the ocean. Metaproteomics and metatranscriptomics analyses suggest that nitrite oxidation is the main pathway of energy production in Nitrospinae. Microautoradiography, linked with catalyzed reporter deposition fluorescence in situ hybridization, indicated that Nitrospinae fix 15 to 45% of inorganic carbon in the mesopelagic western North Atlantic. Nitrite oxidation may have a greater impact on the carbon cycle than previously assumed.. Read whole article in Science. ...
This chapter presents the latest information on nitrification in inland waters, and deals mostly with ammonium-oxidizing bacteria (AOB) as they are primarily important for the onset of the process of nitrification, although their activity might be influenced by the presence of active nitrite-oxidizing bacteria, especially after starvation for ammonium. Nitrification in lakes takes place in the sediment as well as in the water column. As in lakes, nitrification in streams and rivers occurs primarily in the oxic surface layers of the sediment. The use of the amoA gene led to quite different results: no amoA gene fragments related to the Nitrosospira lineage were found in any of the compartments; whereas the pelagic and the epiphytic compartments had only amoA gene fragments of the N. oligotropha lineage, and the benthic compartments contained a mixture of fragments of the N. oligotropha, N. europaea, and Nitrosomonas sp. Nm143 lineages. In summary, nitrification in streams and rivers appears to be
In this study, total AOA amoA, AOB amoA, N. oligotropha amoA, and N. europaea 16S rRNA genes were analyzed by qPCR technique. The AOA amoA primers confirmed that we selected only the sludge samples with AOB dominance, confirmed by undetectable of AOA amoA genes (the limit of detection (LOD) = 5 × 103 copies/mgMLSS). For comparison the gene copies among total AOB, the N. oligotropha and the N. europaea clusters, the gene numbers were converted to cell numbers on the basis of the numbers of the genes found in one cell (Fig. 1). The resulting qPCR demonstrated that AOB affiliated with the N. europaea cluster comprised the majority of the AOB consortium in WWTPs having high residual ammonia and nitrifying reactors (sludge A, D, and E). The influent ammonia concentrations of plant A and reactors D and E were in the range of 173-500 mgN/L and the effluent ammonia concentrations were in elevated levels of 13-171 mgN/L. In contrast, members of N. oligotropha were the dominant AOB in sludge from WWTPs ...
I studied Biomedical Sciences at the University of Applied Sciences Tyrol. The topic of my Bachelor thesis was to evaluate the spread of chemolithoautotrophic bacteria in various Austrian lakes using the CARD-FISH (Catalyzed Reporter Deposition - Flourescence In Situ Hybridisation) method.. Now I am supporting the Molecular Ecology Group with their current research topics as a technical assistant. ...
Nitritasi: oksidasi amonia menjadi nitrit oleh bakteri nitrit. Proses ini dilakukan oleh kelompok bakteri Nitrosomonas dan Nitrosococcus.[1] Reaksi nitritasi. • Nitratasi: oksidasi senyawa nitrit menjadi nitrat oleh bakteri nitrat. Proses ini dilakukan oleh kelompok bakteri Nitrobacter.[1] Reaksi nitratasi. Beberapa proses penting pada siklus nitrogen. Kandungan nitrogen pada purinadan pirimidina yang didapat dari asam amino glutamina. mineralisasi. sehingga istilah nukleotida esensial kurang tepat. artinya asam amino tersebut tidak dapat dihasilkan dari asupan nutrisi senyawa lain. . Oleh sebab itu. Walaupun terdapat sangat banyak molekul nitrogen di dalam atmosfer. denitrifikasi. yang telah punah dalam perjalanan evolusi makhluk vertebrata. reaksi fiksasi nitrogen sering disebut proses topping-up atau fungsi penambahan pada tersedianya cadangan senyawa nitrogen. sedikit sekali makhluk hidup yang dapat menyerap senyawa nitrogen yang terbentuk dari alam tersebut.[4] Dalam bidang pertanian. ...
General Information: Temp: Mesophile; Habitat: Marine. Nitrosococcus halophilus is an obligate chemolithotroph oxidizing ammonia to nitrite. It has been isolated from saline ponds. ...
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Conclusions: The two MBRs had different nitrifying microbial community compositions. In the MBR treating the waste effluents with high solids anaerobic digestion the ammonia oxidizing community was predominated by the family Nitrosomonadaceae y and the genus Nitrosococcus. In the MBR treating waste effluents with low solids the family Nitrosomonadaceae predominated but the genus Nitrosococcus was present a considerable lower abundances. We investigated models of environmental interpretation of nitrifying variables using of distance-based linear models (DISTLM).. Reference. ...
The very narrow, actually a 200 km-plus-long sinuous rille, apparently traced remarkably fast south from the Marius Hills "Yulu" double-volcano source nearly to Flamsteed P crater, through the bleak center of Oceanus Procellarum. Nearby Kepler crater (outside this view, to the right and east) added the bright ejecta rays. This view is distilled from a mosaic of LROC Wide Angle Camera (WAC) observations swept up over five sequential orbits during local early local morning, allowing long shadows to add some relief to this remarkably flat area of the lunar surface, all of it averaging below 2000 meters in elevation. LROC WAC mosaic from LRO orbits 6838 through 6842, December 18, 2010; 79° incidence angle, resolution 58 meters from 41.5 km [NASA/GSFC/Arizona State University ...
GAEA or GE (Gaia or Gê), the personification of the earth. She appears in the character of a divine being as early as the Homeric poems, for we read in the Iliad (iii. 104) that black sheep were sacrificed to her, and that she was invoked by persons taking oaths. (iii. 278, xv. 36, xix. 259, Od. v. 124.) She is further called, in the Homeric poems, the mother of Erechtheus and Tithyus. (Il. ii. 548, Od. vii. 324, xi. 576; comp. Apollon. Rhod. i. 762, iii. 716. According to the Theogony of Hesiod (117, 12,5, &c.), she was the first being that sprang front Chaos, sand gave birth to Uranus and Pontus. By Uranus she then became the mother of a series of beings, -- Oceanus, Coeus, Creius, Hyperion, Iapetus, Theia, Rheia, Themis, Mnemosyne, Phoebe, Thetys, Cronos, the Cyclopes, Brontes, Steropes, Arges, Cottus, Briareus, and Gyges. These children of Ge and Uranus were hated by their father, and Ge therefore concealed. them in the bosom of the earth; but she made a large iron sickle, gave it to her ...
SG-2015-03-27 - euphemia - by arcanine - Teardrop 2500px | (x51) | 33.7Mb | *.zip Upsto.re - Download File RG - Download File ============ SG-2015-03-2
Floodplain lakes are wetlands which receive flood waters from nearby rivers or other sources. Water samples were taken from floodplain lakes near the Illinois River, the Mississippi River, and the Cache River in Southern Illinois. Fluorescence in situ hybridization (FISH), spectrophotometry, and gene probes were used to investigate the effect of nutrient and chemical concentrations on the abundance of nitrifying bacteria; specifically ammonia-oxidizing Nitrosococcus and Nitrosomonadales and nitrite-oxidizing Nitrospira and Nitrobacter. Nitrosococcus was the dominant ammonia-oxidizing bacteria at each river system. Nitrospira and Nitrobacter had similar average abundances. Nitrosococcus abundances showed a significant positive correlation with nitrate (NO3-) (R2= 0.247, P=0.05, 95% confidence R2≥0.199) and a positive trend with nitrite (NO2-) (R2= 0.194, P=0.10, 90% confidence R2≥0.125). Nitrosomonadales abundance positively correlated with temperature (R2= 0.530, P=0.05, 95% confidence R2≥0.510).
Susceptibility of ammonia-oxidizing bacteria to nitrification inhibitors.: Activity of nitrification inhibitors to several typical ammonia-oxidizing bacteria is
Ammonia-Oxidizing Bacteria AOB Definition - Ammonia-oxidizing bacteria (the Nitrosomonas genus) play an important role in the nitrification process. Their...
Get this from a library! Calibration procedure for signal generator SG-1170/U (Wavetek, models 3001 and 3001/608).. [United States. Department of the Army.;]
Looking for online definition of ammonia-oxidizing bacteria in the Medical Dictionary? ammonia-oxidizing bacteria explanation free. What is ammonia-oxidizing bacteria? Meaning of ammonia-oxidizing bacteria medical term. What does ammonia-oxidizing bacteria mean?
Ammonia-oxidizing bacteria and nitrite-oxidizing bacteria are participants in both the C and N cycles and together carry out the process of nitrification. Nitrification can influence both biogeochemical cycles through its effect on N availability to organisms. Nitrification influences the concentration of greenhouse gases in the atmosphere by production of NO and N2O and by influencing consumption of CO2. Most molecular investigations of these bacteria have focused on single genes and enzymes involved in the oxidation of ammonia or nitrite. However, with the sequencing of the genomes of representative nitrifiers, it is possible to examine the entire complement of genes involved in assimilating CO2 and oxidizing NH3 or NO2- and the coordination of their expression. We are exploiting the whole genome sequence information of Nitrosomonas europaea using genomic technology to understand its genetic structure and molecular regulatory mechanisms. The availability of complete genome sequences for ...
Spatial distribution of ammonia-oxidizing bacteria in the biofilm and suspended growth biomass of the full- and partial-bed biological aerated ...
RuBisCO catalyzes two reactions: the carboxylation of D-ribulose 1,5-bisphosphate, the primary event in carbon dioxide fixation, as well as the oxidative fragmentation of the pentose substrate. Both reactions occur simultaneously and in competition at the same active site.
April 29. Loading day. I traveled to Oregon with graduate students Lindy Fine and Dong Yoon Lee yesterday. This morning with help from Joe Needoba we loaded a U-haul truck with equipment at OHSU in Hillsboro and then drove to Newport Oregon to meet the ship. We then spent the rest of the day loading a lot of equipment and supplies onto the R/V Oceanus in Newport, OR, and testing equipment and sensors. Murray Levine, Fred Prahl, and David Langler drove over from Corvallis to help set up our new 12L Owen Tube, which was fashioned from an externally-closed Ocean Dynamics horizontal niskin bottle (see picture). We deployed the new Owen Tube several times to work out our sampling routine. Later that evening we started setting up our amazingly heavy CTD frame, which is designed to handle the extreme currents in the Columbia River estuary without being washed away from the ship.. ...
Five cruises were conducted, two transects from coastal New England to the BATS site (R/V Endeavor cruise EN351 and R/V Oceanus cruise OC413) and three transects across the Florida Straits (R/V Walton Smith cruises WS0503, WS0518, WS0528) with characteristics as in Table 1. Samples were collected in surface and DCM waters using a Sea-Bird Niskin Rosette equipped with standard CTD and PAR detectors (see also below). For DNA extraction samples, 1 l of seawater was gravity filtered through 2 um pore size filters (GE Osmonics, Minnetonka, MN, USA) and then onto a 0.45 um pore size (2001) or 0.2 um pore size (2005) Supor filter (Pall Gelman, Ann Arbor, MI, USA) using vacuum. For FISH samples whole seawater (no size fractionation) was preserved with 1% paraformaldahyde (final concentration) for at least 1 h in the dark at 4°C. For each replicate, volumes of 180 ml or more of seawater were gently filtered onto a 25 mm, 0.2 um Anodisc filter (Whatman, Maidstone, England). The filters were then ...
Tykhe, which was called Fortune by the Romans, is the daughter of the goddess of the seas and rivers, Oceanus. Regarded as the goddess of fortune and success in ancient Greece, Tykhe sculptures generally hold a horn of fruitfulness or a boat steer, which is believed to manage people
Anguil - DFTO - Direct Fired Thermal Oxidizer by Anguil Environmental Systems, Inc.. The Anguil Direct Fired Thermal Oxidizer (DFTO) destroys Hazardous Air ...
Can you name the Goaulds from SG-1? Test your knowledge on this television quiz to see how you do and compare your score to others. Quiz by oz_lizard
"Frozen" is the fourth episode of the sixth season of Stargate SG-1. SG-1 is in Antarctica, examining the site of Earths first Stargate. There, they find a young woman who has been preserved in the ice for several million years. Soon, Colonel Jack ONeill and the rest of the Base fall ill after...
Caldanaerovirga acetigignens gen. nov., sp. nov., an anaerobic xylanolytic, alkalithermophilic bacterium isolated from Trego Hot Spring, Nevada, USA.. PubMed. Wagner, Isaac D; Ahmed, Sibtain; Zhao, Weidong; Zhang, Chuanlun L; Romanek, Christopher S; Rohde, Manfred; Wiegel, Juergen. 2009-11-01. An anaerobic thermophilic bacterium, designated strain JW/SA-NV4(T), was isolated from a xylan-supplemented enrichment culture from Trego hot spring located within the Black Rock Desert (NV, USA). Cells were generally straight or slightly bent rod-shaped, 0.4-0.8 microm in width and 3-6 microm in length during exponential growth. Cells from stationary phase were variable in size and shape, showing curved or bent morphology. Motility was not seen and flagella were not observed in electron micrographs. Sporulation was not observed. Strain JW/SA-NV4(T) stained Gram-negative but is phylogenetically Gram-type positive. Growth occurred at pH(25 degrees C) 6.8-8.8, with optimum growth at pH 8.4; no growth ...
Nitrification, the oxidation of ammonia via nitrite to nitrate, has always been considered to be catalyzed by the concerted activity of ammonia- and nitrite-oxidizing microorganisms. Only recently, complete ammonia oxidizers (comammox), which oxidize ammonia to nitrate on their own, were identified in the bacterial genus Nitrospira, previously assumed to contain only canonical nitrite oxidizers. Nitrospira are widespread in nature, but for assessments of the distribution and functional importance of comammox Nitrospira in ecosystems, cultivation-independent tools to distinguish comammox from strictly nitrite oxidizing Nitrospira are required. Here we developed new PCR primer sets that specifically target the amoA genes coding for subunit A of the distinct ammonia monooxygenase of comammox Nitrospira. While existing primers capture only a fraction of the known comammox amoA diversity, the new primer sets cover as much as 95% of the comammox amoA clade A and 92% of the clade B sequences in a ...
Lunar Orbiter 3 high resolution image of the Surveyor 1 spacecraft and landing site. This image shows the area within the Flamsteed ring in Oceanus Procellarum on the moon. The spacecraft is the bright spot at the center of the red circle. The shadow of the 1 meter wide solar panels can also be seen. The width of the framelets (the spacing between the horizontal lines on the image) is about 220 meters. (Lunar Orbiter 3, frame 194-H3) ...