Results 61 to 70 of about 35,705 (280)

Photoinhibition of FeFe Hydrogenase [PDF]

ACS Catalysis, 2017
In the enzyme FeFe hydrogenase, hydrogen oxidation and production occur at the H-cluster, a Fe6S6 active site that bears intrinsic carbonyl and cyanide ligands. This enzyme has been coupled to photosensitizers to design H2 photoproduction systems, and yet, according to earlier reports, the enzyme from Desulfovibrio desulfuricans is "easily destroyed ...
Sensi, Matteo, Baffert, Carole, Fradale, Laura, Gauquelin, Charles, Soucaille, Philippe, Meynial Salles, Isabelle, Bottin, Herve, de Gioia, Luca, Bruschi, Maurizio, Fourmond, Vincent, Léger, Christophe, Bertini, Luca   +11 more
openaire   +4 more sources

Hydrogenase-Coated Carbon Nanotubes for Efficient H₂ Oxidation

, 2007
Multiwalled carbon nanotubes grown on gold electrodes manufactured by microtechnology techniques have been used as a platform for oriented and stable immobilization of a Ni−Fe hydrogenase.
F. Javier Muñoz (8666700), Olaf Rüdiger (2662681), Víctor M. Fernández (2965782), Marisela Velez (1704724), Inmaculada Rodríguez-Ramos (8666697), M. Asunción Alonso-Lomillo (8666691), Antonio L. De Lacey (8211846), Angel Maroto-Valiente (8666694)   +7 more
core   +1 more source

Understanding the Catalytic Determinant role of Diaphorase‐Like Subunit in Formate Dehydrogenases via Redox Couples

Advanced Science, EarlyView.
A unique mechanism of catalytic bias regulated by diaphorase‐like subunit in formate dehydrogenase from Rhodobacter aestuarii is revealed. The diaphorase‐like subunit functions act as a biological “voltage rheostat” that controls the slow release of NADH to regulate redox balance, biasing the enzyme's catalytic preference toward CO2 reduction over ...
Kuncheng Zhang, Weisong Liu, Hao Su, Huijuan Cui, Yuanming Wang, Zhiguang Zhu, Chun You, Lingling Zhang   +7 more
wiley   +1 more source

Kinetic Studies on Hydrogenase

Journal of Biological Chemistry, 1963
The kinetics of hydrogenase from Clostridium pasteurianum and from Proteus vulgaris were studied by measuring the HD and D/sub 2/ produced when the enzyme catalyzes the exchange between H/sub 2/ and 100% D/sub 2/O. The ratio of D/sub 2/ to HD production depends on the enzyme concentration because the HD produced by the exchange of H/sub 2/ can react ...
N, TAMIYA, S L, MILLER
openaire   +2 more sources

State of [FeFe]‐Hydrogenase

, 2019
Stabilization of fully rotated conformation at one of the iron center has been achieved for the reduced Fe(I)Fe(I) state in chelated cyclic alkyl amino carbene (CAAC) substituted biomimetic hydrogenase model complex. This study indicates that the spatial
Bitupon Borthakur (1566127), Ashwini Kumar Phukan (2707696), Alfredo Vargas, Ashwini K. Phukan, Alfredo Vargas (4464823), Bitupon Borthakur   +5 more
core   +1 more source

Elektroenzymatische CO2‐Fixierung

Angewandte Chemie, EarlyView.
Die elektroenzymatische CO2‐Fixierung ermöglicht eine energieeffiziente, hochselektive Synthese komplexer Moleküle. Um ihr volles Potenzial auszuschöpfen, ist ein grundlegendes Verständnis von elektrodengekoppelten Reduktasen und Carboxylasen erforderlich.
Leonardo Castañeda‐Losada, Michael Richter, Christophe Léger, Vincent Fourmond, Nicolas Plumeré   +4 more
wiley   +1 more source

A fully protected hydrogenase/polymer-based bioanode for high-performance hydrogen/glucose biofuel cells

Nature Communications, 2018
Hydrogenases with Ni- and/or Fe-based active sites are highly active hydrogen oxidation catalysts with activities similar to those of noble metal catalysts.
A. Ruff, Julian Szczesny, N. Marković, F. Conzuelo, S. Zacarias, I. Pereira, W. Lubitz, W. Schuhmann   +7 more
semanticscholar   +1 more source

Spectroscopic investigations under whole cell conditions provide new insight into the metal hydride chemistry of [FeFe]-hydrogenase

, 2019
Hydrogenases are among the fastest H2 evolving catalysts known to date and have been extensively studied under in vitro conditions. Here, we report the first mechanistic investigation of an [FeFe]-hydrogenase under in vivo conditions.
Joachim Heberle (6390121), Marco Lorenzi (7353537), Lívia S. Mészáros (7353404), Pierre Ceccaldi (7353536), Gustav Berggren (7353541), Holly J. Redman (7353406), Emanuel Pfitzner (7353467), Sven T. Stripp (6390107), Moritz Senger (6390114)   +8 more
core   +1 more source

Engineering Synechocystis PCC6803 for hydrogen production: influence on the tolerance to oxidative and sugar stresses.

PLoS ONE, 2014
In the prospect of engineering cyanobacteria for the biological photoproduction of hydrogen, we have studied the hydrogen production machine in the model unicellular strain Synechocystis PCC6803 through gene deletion, and overexpression (constitutive or ...
Marcia Ortega-Ramos, Thichakorn Jittawuttipoka, Panatda Saenkham, Aurelia Czarnecka-Kwasiborski, Hervé Bottin, Corinne Cassier-Chauvat, Franck Chauvat   +6 more
doaj   +1 more source

Genetic, Biochemical, and Molecular Characterization of Methanosarcina barkeri Mutants Lacking Three Distinct Classes of Hydrogenase

bioRxiv, 2018
Methanogenic archaea are key players in the global carbon cycle due to their ability to facilitate the remineralization of organic substrates in many anaerobic environments.
Thomas D. Mand, G. Kulkarni, W. Metcalf
semanticscholar   +1 more source