Final Electron Acceptor
Nicotinamide adenine dinucleotide phosphate (NADP) or other name is triphosphopyridine nucleotide (TPN) is the final electron acceptor for electrons from photosystem. It is a cofactor which is used in anabolic reactions like synthesis of lipid and nucleic acids like DNA and RNA which needs NADPH as a reducing agent. NADPH is the reduced form of NADP+.