Results 11 to 20 of about 47,392 (275)

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

Structural insights into the iron nitrogenase complex

open access: yesbioRxiv, 2023
Nitrogenases are best known for catalyzing the reduction of dinitrogen to ammonia at a complex metallic cofactor. Recently, nitrogenases were shown to reduce carbon dioxide (CO_2) and carbon monoxide to hydrocarbons, offering a pathway to recycle carbon ...
Frederik V. Schmidt   +6 more
semanticscholar   +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

Structures of the nitrogenase complex prepared under catalytic turnover conditions

open access: yesScience, 2022
The enzyme nitrogenase couples adenosine triphosphate (ATP) hydrolysis to the multielectron reduction of atmospheric dinitrogen into ammonia. Despite extensive research, the mechanistic details of ATP-dependent energy transduction and dinitrogen ...
H. Rutledge   +4 more
semanticscholar   +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

Biological nitrogen fixation in theory, practice, and reality: a perspective on the molybdenum nitrogenase system

open access: yesFEBS Letters, 2022
Nitrogenase is the sole enzyme responsible for the ATP‐dependent conversion of atmospheric dinitrogen into the bioavailable form of ammonia (NH3), making this protein essential for the maintenance of the nitrogen cycle and thus life itself.
Stephanie D. Threatt, D. Rees
semanticscholar   +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

Two ligand-binding sites in CO-reducing V nitrogenase reveal a general mechanistic principle

open access: yesScience Advances, 2021
A structure of V nitrogenase with two CO ligands outlines a route for C–C coupling in Fischer-Tropsch–like hydrocarbon formation. Besides its role in biological nitrogen fixation, vanadium-containing nitrogenase also reduces carbon monoxide (CO) to ...
M. Rohde   +4 more
semanticscholar   +1 more source

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