# NADP --- **NADP**, or **nicotinamide adenine dinucleotide phosphate**, is a [[vitamin B]] [[cofactor]] central to [[metabolism]] as an [[electron carrier]]. It is the [[phosphorylation|phosphorylated]] version of [[NAD]]. It is important for it's function in [[photosynthesis]]. ![[nad diagram.png]] ## Structure NADP is the same as [[NAD]], except that a posphate group is attached attached to the 2' carbon off the ribose sugar. It is structurally similar to [[adenosine triphosphate]] in some ways, considering the adenine base, but it only has two phosphate groups, which allow [[redox]] to occur much more eaisly. ATP is the building block of NADP. ## Forms NADP has two main forms, the reduced from *NADPH* and it's oxidized form *NADP+*. **NADP+** is the oxidized form of NADP. When it becomes reduced and accepts electrons it becomes NADPH, which is the [[electron carrier|electron carrying]] from. It is reduced during **NADPH** is the [[electron carrier|"full" of electron]] form of NAD. ___