5-phosphoribose 1-diphosphate biosynthetic process https://github.com/geneontology/go-ontology/issues/31587 Reactome:R-HSA-73843 5-phosphoribosyl-1-pyrophosphate biosynthesis GO:0006015 5-phosphoribose 1-diphosphate synthesis The chemical reactions and pathways resulting in the formation of 5-phosphoribose 1-diphosphate, also known as 5-phosphoribosyl-1-pyrophosphate. 5-phosphoribose 1-diphosphate anabolism MetaCyc:PWY0-662 5-phosphoribosyl-1-pyrophosphate biosynthetic process 5-phosphoribose 1-diphosphate biosynthesis PRPP biosynthetic process 5-phosphoribose 1-diphosphate formation biological_process ribose phosphate biosynthetic process 5-phosphoribose 1-diphosphate metabolic process