(3-{(3R,4R)-3-(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)-4-[(2R)-2-hydroxy-2-phosphonoethoxy]pyrrolidin-1-yl}-3-oxopropy l)phosphonic acid

P00492 — Hypoxanthine-guanine phosphoribosyltransferase