<Tr> <Td> </Td> <Td> </Td> </Tr> <P> Nicotinamide adenine dinucleotide phosphate, abbreviated NADP or, in older notation, TPN (triphosphopyridine nucleotide), is a cofactor used in anabolic reactions, such as lipid and nucleic acid synthesis, which require NADPH as a reducing agent . </P> <P> 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 . </P> <P> In photosynthetic organisms, NADPH is produced by ferredoxin - NADP reductase in the last step of the electron chain of the light reactions of photosynthesis . It is used as reducing power for the biosynthetic reactions in the Calvin cycle to assimilate carbon dioxide . It is used to help turn the carbon dioxide into glucose . It is also needed in the reduction of nitrate into ammonia for plant assimilation in nitrogen cycle . </P>

What is the full form of n a d p h 2
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