NADPH tetrasodium salt is a cofactor, used to donate electrons and hydrogens to reactions catalyzed by some enzymes. NADPH tetrasodium salt is the reduced form of the electron acceptor nicotinamide adenine dinucleotide phosphate (NADP+) and acts as an electron donor in various biological reactions. NADPH is the reduced form of NADP+. NADP+ differs from NAD+ in the presence of an additional phosphate group on the 2' position of the ribose ring that carries the adenine moiety[1]. NADPH provides the reducing equivalents for biosynthetic reactions and the oxidation-reduction involved in protecting against the toxicity of reactive oxygen species[2]. It is also used for the synthesis of lipids and cholesterol and during the process of fatty acid chain elongation[3].
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