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The 3 substrates of this enzyme are FMNH2, NAD +, and NADP +, whereas its 4 products are FMN, NADH, NADPH, and H +. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-NH group of donors with NAD+ or NADP+ as acceptor. The systematic name of this enzyme class is FMNH2:NAD(P)+ oxidoreductase.
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FMN reductase (NAD(P)H) (EC 1.5.1.39, FRG) is an enzyme with systematic name FMNH 2:NAD(P) + oxidoreductase. [1] This enzyme catalyses the following chemical reaction FMNH2 + NAD(P) + ⇌ {\displaystyle \rightleftharpoons } FMN + NAD(P)H + H +
Flavin mononucleotide (FMN), or riboflavin-5′-phosphate, is a biomolecule produced from riboflavin (vitamin B 2) by the enzyme riboflavin kinase and functions as the prosthetic group of various oxidoreductases, including NADH dehydrogenase, as well as a cofactor in biological blue-light photo receptors. [1]
In biochemistry, flavin adenine dinucleotide (FAD) is a redox-active coenzyme associated with various proteins, which is involved with several enzymatic reactions in metabolism.
FMNH 2 + NADH + H + + O 2 5,6-dimethylbenzimidazole + D-erythrose 4-phosphate + NAD + + other product. The C-2 of 5,6-dimethylbenzimidazole is derived from C-1' of the ribityl group of FMNH 2 and 2-H from the ribityl 1'-pro-S hydrogen. This enzyme is part of the biosynthetic pathway to cobalamin (vitamin B 12) in bacteria.
The conservation of the energy can be calculated by the following formula Efficiency = (21.9 x 100%) / 52 = 42% So we can conclude that when NADH is oxidized, about 42% of energy is conserved in the form of three ATPs and the remaining (58%) energy is lost as heat (unless the chemical energy of ATP under physiological conditions was ...
The balance between the oxidized and reduced forms of nicotinamide adenine dinucleotide is called the NAD + /NADH ratio. This ratio is an important component of what is called the redox state of a cell, a measurement that reflects both the metabolic activities and the health of cells. [ 26 ]