Niacinamide adenine dinucleotide phosphate (NADP) and NADPH form a REDOX pair. NADP/NADPH is a coenzyme that supports REDOX reactions via electron transport, especially anaerobic reactions such as lipid and nucleic acid synthesis. NADP/NADPH is a coenzyme that is coupled to various cytochrome P450 systems and oxidase/reductase reaction systems, such as the coenzyme of the thioretin reductase/thioretin system (see related literature)