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Infobox references. Nicotinamide adenine dinucleotide ( NAD) is a coenzyme central to metabolism. [ 3] Found in all living cells, NAD is called a dinucleotide because it consists of two nucleotides joined through their phosphate groups. One nucleotide contains an adenine nucleobase and the other, nicotinamide.
Nicotinamide adenine dinucleotide phosphate, abbreviated NADP+ 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 oxidized ...
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Nicotinamide riboside ( NR, SR647) is a pyridine - nucleoside and a form of vitamin B 3. It functions as a precursor to nicotinamide adenine dinucleotide, or NAD+, [ 1] through a two-step and a three-step pathway.
NAD+ kinase (EC 2.7.1.23, NADK) is an enzyme that converts nicotinamide adenine dinucleotide (NAD +) into NADP + through phosphorylating the NAD + coenzyme. [6] NADP + is an essential coenzyme that is reduced to NADPH primarily by the pentose phosphate pathway to provide reducing power in biosynthetic processes such as fatty acid biosynthesis ...
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".
In enzymology, nicotinamide-nucleotide adenylyltransferase ( NMNAT) ( EC 2.7.7.1) are enzymes that catalyzes the chemical reaction. Thus, the two substrates of this enzyme are ATP and nicotinamide mononucleotide (NMN), whereas its two products are diphosphate and NAD + . This enzyme participates in nicotinate and nicotinamide metabolism .
In enzymology, a NAD (P)+-protein-arginine ADP-ribosyltransferase ( EC 2.4.2.31) is an enzyme that catalyzes the chemical reaction using nicotinamide adenine dinucleotide. as well as the corresponding reaction using nicotinamide adenine dinucleotide phosphate. Thus, the two substrates of this enzyme are NAD + (or NADP +) and protein L- arginine ...
NAD+ synthase. In enzymology, a NAD+ synthetase ( EC 6.3.1.5) is an enzyme that catalyzes the chemical reaction. The 3 substrates of this enzyme are ATP, deamido-NAD +, and NH 3, whereas its 3 products are AMP, diphosphate, and NAD + . This enzyme belongs to the family of ligases, specifically those forming carbon-nitrogen bonds as acid-D ...