Results 71 to 80 of about 28,179 (272)

A Perspective on the Applications of Triphasic Gas Storage in Electrochemical Systems

Advanced Science, EarlyView.
Gas storage in microporous materials positioned locally at an electrode or electrocatalyst surface enhances electrochemical processes. Abstract Microporous materials store gases under dry conditions (e.g., hydrogen or oxygen via physisorption), but in some cases microporous materials also show triphasic (e.g., in a solid|gas|liquid system) gas storage ...
Zhongkai Li, Corin T. Scott, Taku Suzuki‐Osborne, John P. Lowe, Dominic Taylor, Mariolino Carta, Neil B. McKeown, Andrew D. Burrows, Lucia H. Mascaro, Frank Marken   +9 more
wiley   +1 more source

Biosynthesis of Nitrogenase Metalloclusters [PDF]

Chemical Reviews, 2013
Nitrogenase is a complex metalloenzyme that is best known for its function in biological nitrogen fixation.1,2 Harbored in a group of microbes called diazotrophs, nitrogenase catalyzes the reduction of nitrogen (N2) to ammonia (NH3) in a reaction that is usually depicted as N2 + 8H+ + 16MgATP + 8e− → 2NH3 + H2 + 16MgADP + 16Pi.
Keith O. Hodgson, Markus W. Ribbe, Britt Hedman, Yilin Hu   +3 more
openaire   +3 more sources

Regulation of Three Nitrogenase Gene Clusters in the Cyanobacterium Anabaena variabilis ATCC 29413

Life, 2014
The filamentous cyanobacterium Anabaena variabilis ATCC 29413 fixes nitrogen under aerobic conditions in specialized cells called heterocysts that form in response to an environmental deficiency in combined nitrogen.
Teresa Thiel, Brenda S. Pratte
doaj   +1 more source

Deserts, Rivers, Pools, and Billabongs: Water Features of the Nitrogenase Proteins, and their Functions

ChemBioChem, EarlyView.
In the protein surrounding the active site of nitrogenase there is a large anhydrous desert, traversed by two watercourses necessary for the enzyme to convert N2 to NH3. Various pools exist, but their water seems to be stagnant. This review examines the occurrence and function of water inside the protein that contains the catalytic site of the enzyme ...
Ian Dance
wiley   +1 more source

Mechanical coupling in the nitrogenase complex

PLOS Computational Biology, 2021
The enzyme nitrogenase reduces dinitrogen to ammonia utilizing electrons, protons, and energy obtained from the hydrolysis of ATP. Mo-dependent nitrogenase is a symmetric dimer, with each half comprising an ATP-dependent reductase, termed the Fe Protein, and a catalytic protein, known as the MoFe protein, which hosts the electron transfer P-cluster and
Qi Huang, Monika Tokmina-Lukaszewska, Lewis E. Johnson, Hayden Kallas, Bojana Ginovska, John W. Peters, Lance C. Seefeldt, Brian Bothner, Simone Raugei   +8 more
openaire   +6 more sources

Cobalamin‐Dependent Aryl Methyl Ether O‐Demethylases: Promising Enzymes for Biocatalytic Applications from Lignin Valorization to Organic Synthesis

ChemCatChem, EarlyView.
Cobalamin‐dependent aryl methyl ether O‐demethylases have high potential for biocatalytic applications, including lignin valorization and synthetic chemistry. In this review, we provide a detailed overview of such O‐demethylase systems identified to date from various microorganisms, including their mechanism, substrate scope and selectivity, and ...
Niels Krabbe Johnsen, Santipap Chaiyasarn, Zheng Guo, Jaehong Han, Bekir Engin Eser   +4 more
wiley   +1 more source

Current Progress in Nitrogen Fixing Plants and Microbiome Research

Plants, 2020
In agroecosystems, nitrogen is one of the major nutrients limiting plant growth. To meet the increased nitrogen demand in agriculture, synthetic fertilizers have been used extensively in the latter part of the twentieth century, which have led to ...
Kishan Mahmud, Shiva Makaju, Razi Ibrahim, Ali Missaoui   +3 more
doaj   +1 more source

A Red Fluorescent Protein Reporter System Developed for Measuring Gene Expression in Photosynthetic Bacteria under Anaerobic Conditions

Microorganisms, 2022
The photosynthetic bacterium Rhodopseudomonas palustris converts nitrogen gas (N2) to fertilizer ammonia (NH3) and also produces clean energy hydrogen gas (H2) from protons (H+) when it is grown anaerobically in nitrogen fixing medium with illumination ...
Mingyue Jiang, Yan Zeng, Lingwei Cui, Mengmei Wang, Yanning Zheng   +4 more
doaj   +1 more source

Molybdenum threshold for ecosystem scale alternative vanadium nitrogenase activity in boreal forests

Proceedings of the National Academy of Sciences of the United States of America, 2019
Significance Biological nitrogen fixation (BNF) is responsible for large new N inputs to terrestrial ecosystems, particularly in pristine, high-latitude areas undergoing rapid global change.
R. Darnajoux, N. Magain, M. Renaudin, F. Lutzoni, J. Bellenger, Xinning Zhang   +5 more
semanticscholar   +1 more source

Biosynthesis of nitrogenase FeMoco [PDF]

Coordination Chemistry Reviews, 2011
Biosynthesis of nitrogenase FeMoco is a highly complex process that requires, minimally, the participation of nifS, nifU, nifB, nifE, nifN, nifV, nifH, nifD and nifK gene products. Previous genetic analyses have identified the essential factors for the assembly of FeMoco; however, the exact functions of these factors and the precise sequence of events ...
Markus W. Ribbe, Yilin Hu
openaire   +3 more sources