Results 51 to 60 of about 6,680 (190)

Nitrogenase: A Draft Mechanism [PDF]

Accounts of Chemical Research, 2013
Biological nitrogen fixation, the reduction of N(2) to two NH(3) molecules, supports more than half the human population. The predominant form of the enzyme nitrogenase, which catalyzes this reaction, comprises an electron-delivery Fe protein and a catalytic MoFe protein.
Brian M, Hoffman, Dmitriy, Lukoyanov, Dennis R, Dean, Lance C, Seefeldt   +3 more
openaire   +2 more sources

Diversity and Functional Analysis of the FeMo-Cofactor Maturase NifB

Frontiers in Plant Science, 2017
One of the main hurdles to engineer nitrogenase in a non-diazotrophic host is achieving NifB activity. NifB is an extremely unstable and oxygen sensitive protein that catalyzes a low-potential SAM-radical dependent reaction.
Simon Arragain, Emilio Jiménez-Vicente, Alessandro A. Scandurra, Stefan Burén, Luis M. Rubio, Carlos Echavarri-Erasun   +5 more
doaj   +1 more source

Nitrogen fixation by a Bangladesh deepwater rice-field calothrix [PDF]

, 1990
In order to study the influence on blue-green algal nitrogenase activity of environmental variables in deepwater rice-fields (DWR), a laboratory study was planned on a DWR isolate of Calothrix (D764).
Islam, M.D. Rafiqul, Islam, R.M
core  

Nitrogenase Bioelectrochemistry for Synthesis Applications

, 2019
The fixation of atmospheric dinitrogen to ammonia by industrial technologies (such as the Haber Bosch process) has revolutionized humankind. In contrast to industrial technologies, a single enzyme is known for its ability to reduce or “fix” dinitrogen ...
Minteer, Shelley D., Milton, Ross Dean, Shelley D. Minteer, Ross D. Milton   +3 more
core   +1 more source

Artificial, Photoinduced Activation of Nitrogenase Using Directed and Mediated Electron Transfer Processes

, 2020
Nitrogenase, a bacteria-based enzyme, is the sole enzyme able to generate ammonia by atmospheric nitrogen fixation. Thus, improved understanding of its mechanism and developing methods to artificially activate it may contribute greatly to basic research,
Matan Moshe, Meirovich, Omer, Yehezkeli, Oren, Bachar   +2 more
core   +1 more source

Feedback inhibition of nitrogenase [PDF]

Journal of Bacteriology, 1981
No inhibition of nitrogenase activity by physiological levels of NH4+ or carbamyl phosphate was observed in extracts of Azotobacter vinelandii. All of the 15N2 reduced by cultures which received no NH4+ was found in the cells. By contrast, more than 95% of the 15N2 reduced by cultures which had been given NH4+ was found in the medium.
J K, Gordon, V K, Shah, W J, Brill
openaire   +2 more sources

The effect of oxygen concentration and temperature on nitrogenase activity in the heterocystous cyanobacterium Fischerella sp.

Scientific Reports, 2017
Heterocysts are differentiated cells formed by some filamentous, diazotrophic (dinitrogen-fixing) cyanobacteria. The heterocyst is the site of dinitrogen fixation providing the oxygen-sensitive nitrogenase with a low-oxygen environment.
Lucas J. Stal
doaj   +1 more source

nifPred: Proteome-Wide Identification and Categorization of Nitrogen-Fixation Proteins of Diaztrophs Based on Composition-Transition-Distribution Features Using Support Vector Machine

Frontiers in Microbiology, 2018
As inorganic nitrogen compounds are essential for basic building blocks of life (e.g., nucleotides and amino acids), the role of biological nitrogen-fixation (BNF) is indispensible.
Prabina K. Meher, Tanmaya K. Sahu, Jyotilipsa Mohanty, Jyotilipsa Mohanty, Shachi Gahoi, Supriya Purru, Monendra Grover, Atmakuri R. Rao   +7 more
doaj   +1 more source

Metabolomics and Dual RNA-Sequencing on Root Nodules Revealed New Cellular Functions Controlled by Paraburkholderia phymatum NifA

Metabolites, 2021
Paraburkholderia phymatum STM815 is a nitrogen-fixing endosymbiont that nodulate the agriculturally important Phaseolus vulgaris and several other host plants.
Paula Bellés-Sancho, Martina Lardi, Yilei Liu, Leo Eberl, Nicola Zamboni, Aurélien Bailly, Gabriella Pessi   +6 more
doaj   +1 more source

Effect of ammonium concentration on methane oxidation and CO2 removal in an anaerobic biotrickling filter treating synthetic landfill gas and leachate

Journal of Chemical Technology &Biotechnology, EarlyView.
Abstract BACKGROUND Landfill gas (LFG) and leachate are commonly treated separately through energy‐intensive processes. This study evaluated the integration of both streams in an anaerobic biotrickling filter (BTF) to achieve simultaneous methane (CH4) and carbon dioxide (CO2) removal coupled with ammonium (NH4+) transformation, and how the microbial ...
Cecilia Lizeth Alvarez‐Guzmán, Karla María Muñoz‐Páez, Alejandro Vargas, Idania Valdez‐Vazquez   +3 more
wiley   +1 more source