Noun
PRPP (uncountable)
(biochemistry) Initialism of phosphoribosyl pyrophosphate.
PRPP transferase catalyzes both the ribosylation and decarboxylation reactions, forming UMP from orotic acid in the presence of PRPP. Source: Internet
Plants and microorganisms commonly synthesize tryptophan from shikimic acid or anthranilate citation by the following process: anthranilate condenses with phosphoribosylpyrophosphate (PRPP), generating pyrophosphate as a by-product. Source: Internet