MOLYBDENUM DOPED CARBON AEROGELS WITH CATALYTIC POTENTIAL [PDF]
, 2014 Mo-doped carbon aerogels were obtained in the polycondensation reaction of aqueous resorcinol and formaldehyde by adding Mo-salt at two different stages of the synthesis: i) to the initial sol; ii) by incipient wetting impregnation of the ...
Geissler, Erik +10 more
core +1 more source
Classifying the metal dependence of uncharacterized nitrogenases
Frontiers in Microbiology, 2013 Nitrogenase enzymes have evolved complex iron-sulfur (Fe-S) containing cofactors that most commonly contain molybdenum (MoFe, Nif) as a heterometal but also exist as vanadium (VFe, Vnf) and heterometal independent (Fe-only, Anf) forms.
Shawn E Mcglynn +3 more
doaj +1 more source
Which functional groups of the molybdopterin ligand should be considered when modeling the active sites of the molybdenum and tungsten cofactors? A density functional theory study. [Elektronisk resurs] [PDF]
, 2009 A density functional theory study of the influence of the various functional groups of the molybdopterin ligand on electronic and geometric properties of active-site models for the molybdenum and tungsten cofactors has been undertaken.
Ryde, Ulf, +3 more
core +2 more sources
Thiosulfoxide (Sulfane) Sulfur: New Chemistry and New Regulatory Roles in Biology
Molecules, 2014 The understanding of sulfur bonding is undergoing change. Old theories on hypervalency of sulfur and the nature of the chalcogen-chalcogen bond are now questioned.
John I. Toohey, Arthur J. L. Cooper
doaj +1 more source
The active site structure and catalytic mechanism of arsenite oxidase
Scientific Reports, 2017 Arsenite oxidase is thought to be an ancient enzyme, originating before the divergence of the Archaea and the Bacteria. We have investigated the nature of the molybdenum active site of the arsenite oxidase from the Alphaproteobacterium Rhizobium sp. str.
Thomas P. Warelow +4 more
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Prebiotic aqueous reactions catalyzed by native nickel without hydrogen. [PDF]
FEBS JSerpentinizing (H2‐producing) hydrothermal vents are candidate environments for metabolic origin. They generate highly reducing conditions that convert CO2 to formate and methane in abiotic reactions resembling reactions of the acetyl‐CoA pathway of CO2 fixation. They also contain natural catalysts. Native nickel (Ni0), like Fe0, Co0, and their alloys,
Garcia Garcia C, Brabender M, Martin WF.
europepmc +2 more sources
REDOX CHEMISTRY OF MOLYBDENUM IN NATURAL WATERS AND ITS INVOLVEMENT IN BIOLOGICAL EVOLUTION
Frontiers in Microbiology, 2012 The transition element molybdenum (Mo) possesses diverse valances (+II to +VI), and is involved in forming cofactors in more than 60 enzymes in biology.
Deli eWang
doaj +1 more source
Effect of foliar application of microelements on chlorophyll content, canopy architecture indicators, and physiological parameters of Hordeum vulgare L. plants [PDF]
PeerJBackground The availability of nutrients determines the proper development and yield of plants. Microelements play an important role primarily as cofactors of important enzymes in the metabolic and physiological processes of plants.
Barbara Stadnik +2 more
doaj +2 more sources
An Fe(6)C Core in All Nitrogenase Cofactors
, 2022 The biological process of dinitrogen reduction to ammonium occurs at the cofactors of nitrogenases, the only enzymes that catalyze this challenging chemical reaction.
Decamps, Laure +8 more
core +1 more source
Trace elements induce predominance among methanogenic activity in anaerobic digestion
Frontiers in Microbiology, 2016 Trace elements play an essential role in all organisms due to their functions in enzyme complexes. In anaerobic digesters, control and supplementation of trace elements lead to stable and more efficient methane production processes while trace element ...
Babett Wintsche +6 more
doaj +1 more source