The Ultimate Guanosine diphosphate - American History Information Guide and Reference

Guanosine diphosphate
Chemical name	Guanosine 5'-(trihydrogen diphosphate)
Chemical formula	C₁₀H₁₅N₅O₁₁P₂
Molecular mass	443.20 g/mol
CAS number	146-91-8
SMILES	O[C@H]1[C@H]([C@H](N2C(N= C(N)NC3=O)=C3N=C2)O[C@@H] 1COP(O)(OP(O)(O)=O)=O)O

Guanosine diphosphate, abbreviated GDP, is a nucleotide. It is an ester of pyrophosphoric acid with the nucleoside guanosine. GDP consists of the pyrophosphate group, the pentose sugar ribose, and the nucleobase guanine.

GDP is the product of GTP dephosphorylation by GTPases, e.g. the G-proteins that are involved in signal transduction.

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