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Nitrate reductase (NADH) (EC 1.7.1.1, assimilatory nitrate reductase, NADH-nitrate reductase, NADH-dependent nitrate reductase, assimilatory NADH: nitrate reductase, nitrate reductase (NADH 2), NADH 2: nitrate oxidoreductase) is an enzyme with systematic name nitrite: NAD + oxidoreductase.
Nitrite oxidoreductase (NOR or NXR) is an enzyme involved in nitrification.It is the last step in the process of aerobic ammonia oxidation, which is carried out by two groups of nitrifying bacteria: ammonia oxidizers such as Nitrosospira, Nitrosomonas, and Nitrosococcus convert ammonia to nitrite, while nitrite oxidizers such as Nitrobacter and Nitrospira oxidize nitrite to nitrate.
The systematic name of this enzyme class is ammonium-hydroxide:NAD(P)+ oxidoreductase. Other names in common use include nitrite reductase (reduced nicotinamide adenine dinucleotide , (phosphate)) , NADH-nitrite oxidoreductase , NADPH-nitrite reductase , assimilatory nitrite reductase , nitrite reductase [NAD(P)H2] , and NAD(P)H2:nitrite ...
Nitrate reductase (NAD(P)H) (EC 1.7.1.2, assimilatory nitrate reductase, assimilatory NAD(P)H-nitrate reductase, NAD(P)H bispecific nitrate reductase, nitrate reductase (reduced nicotinamide adenine dinucleotide (phosphate)), nitrate reductase NAD(P)H, NAD(P)H-nitrate reductase, nitrate reductase [NAD(P)H 2], NAD(P)H 2:nitrate oxidoreductase) is an enzyme with systematic name nitrite:NAD(P ...
For example, nitrifying bacteria such as Nitrobacter oxidize nitrite to nitrate, which releases sufficient energy to pump protons and generate ATP, but not enough to produce NADH directly. [64] As NADH is still needed for anabolic reactions, these bacteria use a nitrite oxidoreductase to produce enough proton-motive force to run part of the ...
In biochemistry, an oxidoreductase is an enzyme that catalyzes the transfer of electrons from one molecule, ... EC 1.6 includes oxidoreductases that act on NADH or NADPH;
This problem is solved by using a nitrite oxidoreductase to produce enough proton-motive force to run part of the electron transport chain in reverse, causing complex I to generate NADH. [63] [64] Prokaryotes control their use of these electron donors and acceptors by varying which enzymes are produced, in response to environmental conditions. [65]
The nitrate reductase of higher plants, algae, and fungi is a homodimeric cytosolic protein with five conserved domains in each monomer: 1) an Mo-MPT domain that contains the single molybdopterin cofactor, 2) a dimer interface domain, 3) a cytochrome b domain, and 4) an NADH-binding domain that combines with 5) an FAD-binding domain to form the ...