# phosphoribosyl pyrophosphate

> English word · Noun

## Definitions
1. A pentose phosphate, formed from ribose 5-phosphate by the enzyme ribose-phosphate diphosphokinase, which plays a role in transferring phospho-ribose groups in several reactions.

## Etymology
From phosphoribosyl + pyrophosphate.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/phosphoribosyl-pyrophosphate