Nicotinamide adenine dinucleotide |
Nicotinamide adenine dinucleotide (NAD) and nicotinamide adenine dinucleotide
phosphate (NADP) are two important coenzymes found in
cells. NADH is the reduced
form and NAD+ is the oxidized form of NAD.
NAD is used extensively in glycolysis and the citric acid cycle of cellular respiration. It forms NADP with the addition of a phosphate group (much as ADP forms ATP). NADP is produced in the preliminary cycles of photosynthesis, and is used in the later Calvin cycle
of photosynthesis. It is used in many other anabolic reactions in various organisms as well.
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