Guanosine diphosphate

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Guanosine diphosphate, also known as GDP, Guanosine 5'-diphosphate and Guanosine pyrophosphate[1], is a nucleoside diphosphate and is an ester of pyrophosphoric acid combined with a nucleoside guanosine molecule. It is made up of a pyrophosphate group, a pentose sugar ribose and the base guanine[2].

GDP can be converted into GTP with the help of pyruvate kinase and phosphoenolpyruvate. GDP is also the product of GTP dephosphorylation by GTPases, e.g. theG-proteins that are involved in signal transduction[3]

References 

  1. http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=8977#x27
  2. http://pubchem.ncbi.nlm.nih.gov/summary/summary.cgi?cid=8977#x27
  3. http://www.rsc.org/learn-chemistry/resource/rws00008630/guanosine-diphosphate

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