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The midpoint potential of the NAD + /NADH redox pair is −0.32 volts, which makes NADH a moderately strong reducing agent. [7] The reaction is easily reversible, when NADH reduces another molecule and is re-oxidized to NAD +. This means the coenzyme can continuously cycle between the NAD + and NADH forms without being consumed. [5]
NAD is commonly called by other names, including NAD+ or NADH. These are both forms of NAD — NAD+ is the positively charged form, which has lost an electron, and NADH is the neutral form which ...
Nicotinamide adenine dinucleotide phosphate, abbreviated NADP [1] [2] or, in older notation, TPN (triphosphopyridine nucleotide), is a cofactor used in anabolic reactions, such as the Calvin cycle and lipid and nucleic acid syntheses, which require NADPH as a reducing agent ('hydrogen source'). NADPH is the reduced form, whereas NADP + is the ...
This category groups enzymes that use nicotinamide adenine dinucleotide (NAD + and its reduced form, NADH) in redox reactions. See also Category:NADPH-dependent enzymes.. In general, the NAD is not stably associated with the enzyme, being a coenzyme; hence, we call such enzymes "NADH-dependent" enzymes, rather than simply "NADH enzymes".
Other names in common use include NAD+ pyrophosphorylase, adenosine triphosphate-nicotinamide mononucleotide transadenylase, ATP:NMN adenylyltransferase, diphosphopyridine nucleotide pyrophosphorylase, nicotinamide adenine dinucleotide pyrophosphorylase, nicotinamide mononucleotide adenylyltransferase, and NMN adenylyltransferase.
In enzymology, a NAD + diphosphatase (EC 3.6.1.22) is an enzyme that catalyzes the chemical reaction NAD + + H 2 O ⇌ {\displaystyle \rightleftharpoons } AMP + NMN Thus, the two substrates of this enzyme are NAD + and H 2 O , whereas its two products are AMP and NMN .
The 3 substrates of this enzyme are sn-glycerol 3-phosphate, NAD +, and NADP +, whereas its 4 products are glycerone phosphate, NADH, NADPH, and H +. This enzyme belongs to the family of oxidoreductases, specifically those acting on the CH-OH group of donor with NAD + or NADP + as acceptor.
Adenine derivatives have various roles in biochemistry including cellular respiration, in the form of both the energy-rich adenosine triphosphate (ATP) and the cofactors nicotinamide adenine dinucleotide (NAD), flavin adenine dinucleotide (FAD) and Coenzyme A. It also has functions in protein synthesis and as a chemical component of DNA and RNA ...