Tags: Chemical Compound, Chemical Substance.
Phosphoribosyl pyrophosphate (PRPP) is a pentosephosphate.It is formed from ribose 5-phosphate by the enzyme ribose-phosphate diphosphokinase.It plays a role in transferring phospho-ribose groups in several reactions:In de novo generation of purines the enzyme amidophosphoribosyltransferase acts upon PRPP to create phosphoribosylamine.