Results 21 to 30 of about 7,987 (160)
The Ion-Translocating NrfD-Like Subunit of Energy-Transducing Membrane Complexes
Frontiers in Chemistry, 2021 Several energy-transducing microbial enzymes have their peripheral subunits connected to the membrane through an integral membrane protein, that interacts with quinones but does not have redox cofactors, the so-called NrfD-like subunit.
Filipa Calisto +3 more
doaj +1 more source
Level of Sulfite Oxidase Activity Affects Sulfur and Carbon Metabolism in Arabidopsis
Frontiers in Plant Science, 2021 Molybdenum cofactor containing sulfite oxidase (SO) enzyme is an important player in protecting plants against exogenous toxic sulfite. It was also demonstrated that SO activity is essential to cope with rising dark-induced endogenous sulfite levels and ...
Dinara Oshanova +7 more
doaj +1 more source
Sulfite Reductase Protects Plants against Sulfite Toxicity [PDF]
Plant Physiology, 2012 Abstract Plant sulfite reductase (SiR; Enzyme Commission 1.8.7.1) catalyzes the reduction of sulfite to sulfide in the reductive sulfate assimilation pathway. Comparison of SiR expression in tomato (Solanum lycopersicum ‘Rheinlands Ruhm’) and Arabidopsis (Arabidopsis thaliana) plants revealed that SiR is expressed in a different tissue ...
Dmitry, Yarmolinsky +3 more
openaire +2 more sources
An intertwined evolutionary history of methanogenic archaea and sulfate reduction. [PDF]
PLoS ONE, 2012 Hydrogenotrophic methanogenesis and dissimilatory sulfate reduction, two of the oldest energy conserving respiratory systems on Earth, apparently could not have evolved in the same host, as sulfite, an intermediate of sulfate reduction, inhibits ...
Dwi Susanti, Biswarup Mukhopadhyay
doaj +1 more source
Biomolecules, 2020 A comparative study of the kinetic characteristics (specific activity, initial and maximum rate, and affinity for substrates) of key enzymes of assimilatory sulfate reduction (APS reductase and dissimilatory sulfite reductase) in cell-free extracts of ...
Ivan Kushkevych +6 more
doaj +1 more source
A conserved mechanism for sulfonucleotide reduction. [PDF]
PLoS Biology, 2005 Sulfonucleotide reductases are a diverse family of enzymes that catalyze the first committed step of reductive sulfur assimilation. In this reaction, activated sulfate in the context of adenosine-5'-phosphosulfate (APS) or 3'-phosphoadenosine 5 ...
Kate S Carroll +5 more
doaj +2 more sources
Ferredoxin-sulfite Reductase from Spinach [PDF]
Agricultural and Biological Chemistry, 1980 Ferredoxin-sulfite reductase (Fd-SiR) [hydrogen-sulfide: ferredoxin oxidoreductase, EC 1.8.7.1] from spinach leaves has been purified to homogeneity by a new procedure. Subunit analysis by sodium dodecyl sulfate gel electrophoresis yielded a single protein band with a molecular weight of 71,000.
AKETAGAWA, Jun, TAMURA, Goro
openaire +2 more sources
Homology modeling of dissimilatory APS reductases (AprBA) of sulfur-oxidizing and sulfate-reducing prokaryotes. [PDF]
PLoS ONE, 2008 BACKGROUND: The dissimilatory adenosine-5'-phosphosulfate (APS) reductase (cofactors flavin adenine dinucleotide, FAD, and two [4Fe-4S] centers) catalyzes the transformation of APS to sulfite and AMP in sulfate-reducing prokaryotes (SRP); in sulfur ...
Birte Meyer, Jan Kuever
doaj +1 more source
Dissimilatory sulfite reductase in cell-free extracts of intestinal sulfate-reducing bacteria
Біологічні студії, 2014 Dissimilatory sulfite reductase activity in different fractions of the sulfate-reducing bacteria Desulfovibrio piger Vib-7 and Desulfomicrobium sp. Rod-9 isolated from human intestine was studied.
I. V. Kushkevych, R. V. Fafula
doaj +1 more source
Frontiers in Microbiology, 2018 Sulfate is the predominant electron acceptor for anaerobic oxidation of methane (AOM) in marine sediments. This process is carried out by a syntrophic consortium of anaerobic methanotrophic archaea (ANME) and sulfate reducing bacteria (SRB) through an ...
Hang Yu +14 more
doaj +1 more source