Results 41 to 50 of about 47,392 (275)

Structural Characterization of Two CO Molecules Bound to the Nitrogenase Active Site

open access: yesAngewandte Chemie, 2020
As an approach towards unraveling the nitrogenase mechanism, we have studied the binding of CO to the active‐site FeMo‐cofactor. CO is not only an inhibitor of nitrogenase, but it is also a substrate, undergoing reduction to hydrocarbons (Fischer–Tropsch‐
T. M. Buscagan   +4 more
semanticscholar   +1 more source

nifDK Clusters Located on the Chromosome and Megaplasmid of Bradyrhizobium sp. Strain DOA9 Contribute Differently to Nitrogenase Activity During Symbiosis and Free-Living Growth

open access: yesMolecular 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
doaj   +1 more source

Archaea, bacteria and termite, nitrogen fixation and sustainable plants production

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 2021
Certain bacteria and archaea are responsible for biological nitrogen fixation. Metabolic pathways usually are common between archaea and bacteria. Diazotrophs are categorized into two main groups namely: root-nodule bacteria and plant growth-promoting ...
Wenli SUN   +2 more
doaj   +1 more source

Nitrogen Fixation Mutants of the Actinobacterium Frankia Casuarinae CcI3 [PDF]

open access: yes, 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
core   +2 more sources

Characterization of an M-Cluster-Substituted Nitrogenase VFe Protein

open access: yesmBio, 2018
The Mo- and V-nitrogenases are two homologous members of the nitrogenase family that are distinguished mainly by the presence of different heterometals (Mo or V) at their respective cofactor sites (M- or V-cluster).
Johannes G. Rebelein   +4 more
doaj   +1 more source

Nitrogenase beyond the Resting State: A Structural Perspective

open access: yesMolecules, 2023
Nitrogenases have the remarkable ability to catalyze the reduction of dinitrogen to ammonia under physiological conditions. How does this happen? The current view of the nitrogenase mechanism focuses on the role of hydrides, the binding of dinitrogen in ...
Rebeccah A. Warmack, Douglas C. Rees
doaj   +1 more source

CO Binding to the FeV Cofactor of CO‐Reducing Vanadium Nitrogenase at Atomic Resolution

open access: yesAngewandte Chemie, 2020
Nitrogenases reduce N2, the most abundant element in Earth's atmosphere that is otherwise resistant to chemical conversions due to its stable triple bond.
M. Rohde, K. Grunau, O. Einsle
semanticscholar   +1 more source

Minimal ATP‐Independent N2‐Reducing Systems Defined by L‐Cluster‐Bound Nitrogenase Assembly Platforms

open access: yesAngewandte Chemie, EarlyView.
Association of the L‐cluster with the nitrogenase assembly proteins NifEN (NifENL) or NifB (NifBL) intrinsically endows these proteins with N2‐reducing activity, enabling in vitro N2‐reduction by NifENL and NifBL when supplied with chemical reductants or photoexcited quantum dots while supporting in vivo N2‐fixation in NifENL‐ and NifENL‐expressing ...
Robert Quechol   +4 more
wiley   +2 more sources

Looking for Options to Sustainably Fixate Nitrogen. Are Molecular Metal Oxides Catalysts a Viable Avenue?

open access: yesFrontiers in Chemistry, 2021
Fast and reliable industrial production of ammonia (NH3) is fundamentally sustaining modern society. Since the early 20th Century, NH3 has been synthesized via the Haber–Bosch process, running at conditions of around 350–500°C and 100–200 times ...
Rebeca González-Cabaleiro   +2 more
doaj   +1 more source

Test of Host Sanction Hypothesis in Soybean Plants Co-inoculated with Nitrogen Fixing and Non-fixing Bradyrhizobium japonicum [PDF]

open access: yes, 2015
Aims: We tested the proposed mechanism for potential sanctions, that the plant would reduce viability of non-fixing rhizobia inside nodules, performing viable Bradyrhizobium japonicum counts from co-occupied and single-occupied nodules in co-inoculated ...
Bedmar, Eulogio   +2 more
core   +1 more source

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