Results 21 to 30 of about 33,406 (213)
Nitrogenase and homologs [PDF]
JBIC Journal of Biological Inorganic Chemistry, 2014 Nitrogenase catalyzes biological nitrogen fixation, a key step in the global nitrogen cycle. Three homologous nitrogenases have been identified to date, along with several structural and/or functional homologs of this enzyme that are involved in nitrogenase assembly, bacteriochlorophyll biosynthesis and methanogenic process, respectively.
Hu, Yilin, Ribbe, Markus W
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Negative Cooperativity in the Nitrogenase Fe Protein Electron Delivery Cycle [PDF]
, 2016 Nitrogenase catalyzes the ATP-dependent reduction of dinitrogen (N2) to two ammonia (NH3) molecules through the participation of its two protein components, the MoFe and Fe proteins.
Antony, Edwin +11 more
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Biochimica et Biophysica Acta (BBA) - Bioenergetics, 2013 Nitrogenase contains two unique metalloclusters: the P-cluster and the M-cluster. The assembly processes of P- and M-clusters are arguably the most complicated processes in bioinorganic chemistry. There is considerable interest in decoding the biosynthetic mechanisms of the P- and M-clusters, because these clusters are not only biologically important ...
Hu, Yilin, Ribbe, Markus W.
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Microbiology Spectrum, 2021 In Anabaena variabilis, the nif1 genes, which are activated by CnfR1, produce a Mo-nitrogenase that is expressed only in heterocysts. Similarly, the nif2 genes, which are activated by CnfR2, make a Mo-nitrogenase that is expressed only in anaerobic ...
Brenda S. Pratte, Teresa Thiel
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Antenna Modification Leads to Enhanced Nitrogenase Activity in a High Light-Tolerant Cyanobacterium
mBio, 2021 Biological nitrogen fixation is an energy-intensive process that contributes significantly toward supporting life on this planet. Among nitrogen-fixing organisms, cyanobacteria remain unrivaled in their ability to fuel the energetically expensive ...
Anindita Bandyopadhyay +4 more
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Scientific Reports, 2022 Biological nitrogen fixation (BNF) is the reduction of N2 into NH3 in a group of prokaryotes by an extremely O2-sensitive protein complex called nitrogenase. Transfer of the BNF pathway directly into plants, rather than by association with microorganisms,
Lucía Payá-Tormo +11 more
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NifA is the master regulator of both nitrogenase systems in Rhodobacter capsulatus
MicrobiologyOpen, 2019 Rhodobacter capsulatus fixes atmospheric nitrogen (N2) by a molybdenum (Mo)‐nitrogenase and a Mo‐free iron (Fe)‐nitrogenase, whose production is induced or repressed by Mo, respectively. At low nanomolar Mo concentrations, both isoenzymes are synthesized
Lisa Demtröder +4 more
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Molecular Plant-Microbe Interactions, 2016 Bradyrhizobium sp. strain DOA9 contains two copies of the nifDK genes, nifDKc, located on the chromosome, and nifDKp, located on a symbiotic megaplasmid.
Jenjira Wongdee +8 more
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Nitrogen Fixation Mutants of the Actinobacterium Frankia Casuarinae CcI3 [PDF]
, 2017 Frankia is a representative genus of nitrogen-fixing (N2-fixing) actinobacteria; however, the molecular mechanisms underlying various phenomena such as the differentiation of a N2 fixation-specific structure (vesicle) and the regulation of N2 fixation ...
Kucho, Ken-ichi +4 more
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A two-stage, two-organism process for biohydrogen from glucose [PDF]
, 2006 H2 can potentially be produced in a two-stage biological process: the fermentation of glucose by Escherichia coli HD701 and the photofermentation of the residual medium by Rhodobacter sphaeroides O.U. 001. In a typical batch fermentation, E.
Macaskie, LE, Redwood, MD
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