FnrS RNA: FnrS RNA is a family of Hfq-binding small RNA whose expression is upregulated in response to anaerobic conditions. It is named FnrS because its expression is strongly dependent on fumarate and nitrate reductase regulator (FNR), a direct oxygen availability sensor.Ferredoxin: Ferredoxins (from Latin ferrum: iron + redox, often abbreviated "fd") are iron-sulfur proteins that mediate electron transfer in a range of metabolic reactions. The term "ferredoxin" was coined by D.Anabaena circinalis: Anabaena circinalis is a species of Gram-negative, photosynthetic cyanobacteria common to freshwater environments throughout the world. Much of the scientific interest in A.Amphibacillus xylanus: Amphibacillus xylanus or A. xylanus is a gram-positive-spore forming bacterium with cells 0.Oxidoreductase FAD-binding domain: B:7-104 B:7-104 B:7-104Nitrate reductase (NADPH): Nitrate reductase (NADPH) (, assimilatory nitrate reductase, assimilatory reduced nicotinamide adenine dinucleotide phosphate-nitrate reductase, NADPH-nitrate reductase, assimilatory NADPH-nitrate reductase, triphosphopyridine nucleotide-nitrate reductase, NADPH:nitrate reductase, nitrate reductase (NADPH2), NADPH2:nitrate oxidoreductase) is an enzyme with system name nitrite:NADP+ oxidoreductase. This enzyme catalises the following chemical reactionLeucoplastMushy peasElectron transfer: Electron transfer (ET) occurs when an electron moves from an atom or a chemical species (e.g.HMG-CoA reductase: HMG-CoA reductase (3-hydroxy-3-methyl-glutaryl-CoA reductase, officially abbreviated HMGCR) is the rate-controlling enzyme (NADH-dependent, ; NADPH-dependent, ) of the mevalonate pathway, the metabolic pathway that produces cholesterol and other isoprenoids. Normally in mammalian cells this enzyme is suppressed by cholesterol derived from the internalization and degradation of low density lipoprotein (LDL) via the LDL receptor as well as oxidized species of cholesterol.Table of standard reduction potentials for half-reactions important in biochemistry: The values below are standard reduction potentials for half-reactions measured at 25°C, 1 atmosphere and a pH of 7 in aqueous solution.Glucose-methanol-choline oxidoreductase family: In molecular biology, the glucose-methanol-choline oxidoreductase family (GMC oxidoreductase) is a family of enzymes with oxidoreductase activity.