Results 1 to 10 of about 38,650 (270)

PII protein is essential for transcriptional regulation of anf gene cluster for iron-only nitrogenase in Rhodopseudomonas palustris [PDF]

open access: yesApplied and Environmental Microbiology
In addition to catalyzing the biological nitrogen fixation, iron-only (Fe-only) nitrogenase is also able to reduce carbon dioxide (CO2) to formate (HCOO−) and methane (CH4).
Yan Zeng   +7 more
doaj   +2 more sources

Genetic analysis of the NifM dependence of the nitrogenase iron proteins [PDF]

open access: yesmBio
NifH maturation in certain diazotrophic bacteria depends on NifM, a protein with a PpiC-isomerase domain. Intriguingly, the putative proline substrate for NifM is present in NifH proteins from strains lacking nifM, raising questions regarding the actual ...
Zhuoting Xie   +6 more
doaj   +2 more sources

Structural basis for the conformational protection of nitrogenase from O2 [PDF]

open access: yesStructural Dynamics
The low reduction potentials required for the reduction of dinitrogen (N2) render metal-based nitrogen-fixation catalysts vulnerable to irreversible damage by dioxygen (O2).
Sarah M Narehood   +8 more
doaj   +2 more sources

Regulatory response to a hybrid ancestral nitrogenase in Azotobacter vinelandii

open access: yesMicrobiology Spectrum, 2023
Biological nitrogen fixation, the microbial reduction of atmospheric nitrogen to bioavailable ammonia, represents both a major limitation on biological productivity and a highly desirable engineering target for synthetic biology. However, the engineering
Alex J. Rivier   +4 more
doaj   +1 more source

A critical role of an oxygen-responsive gene for aerobic nitrogenase activity in Azotobacter vinelandii and its application to Escherichia coli

open access: yesScientific Reports, 2022
Since nitrogenase is irreversibly inactivated within a few minutes after exposure to oxygen, current studies on the heterologous expression of nitrogenase are limited to anaerobic conditions.
Ren Takimoto   +6 more
doaj   +1 more source

Potential of Phototrophic Purple Nonsulfur Bacteria to Fix Nitrogen in Rice Fields

open access: yesMicroorganisms, 2021
Biological nitrogen fixation catalyzed by Mo-nitrogenase of symbiotic diazotrophs has attracted interest because its potential to supply plant-available nitrogen offers an alternative way of using chemical fertilizers for sustainable agriculture ...
Isamu Maeda
doaj   +1 more source

Response strategies of N-fixation by epiphytic bryophytes to water change in a subtropical montane cloud forest

open access: yesEcological Indicators, 2022
Water changes are predicted to regulate physiological activities of bryophytes characterized by poikilohydric gametophytes. In montane forest ecosystems, nitrogen(N)–fixing bryophyte–cyanobacteria associations are main N resources.
Xiaoyang Fan, Guodi Yuan, Wenyao Liu
doaj   +1 more source

Nitrogenase Fe Protein: A Multi-Tasking Player in Substrate Reduction and Metallocluster Assembly

open access: yesMolecules, 2022
The Fe protein of nitrogenase plays multiple roles in substrate reduction and metallocluster assembly. Best known for its function to transfer electrons to its catalytic partner during nitrogenase catalysis, the Fe protein is also a key player in the ...
Markus W. Ribbe   +7 more
doaj   +1 more source

Heterologous expression of a fully active Azotobacter vinelandii nitrogenase Fe protein in Escherichia coli

open access: yesmBio, 2023
The functional versatility of the Fe protein, the reductase component of nitrogenase, makes it an appealing target for heterologous expression, which could facilitate future biotechnological adaptations of nitrogenase-based production of valuable ...
Joseph B. Solomon   +7 more
doaj   +1 more source

Selenocyanate derived Se-incorporation into the nitrogenase Fe protein cluster

open access: yeseLife, 2022
The nitrogenase Fe protein mediates ATP-dependent electron transfer to the nitrogenase MoFe protein during nitrogen fixation, in addition to catalyzing MoFe protein-independent substrate (CO2) reduction and facilitating MoFe protein metallocluster ...
Trixia M Buscagan   +2 more
doaj   +1 more source

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