Crystal structure of the Trypanosoma cruzi hypoxanthine-guanine-xanthine phosphoribosyltransferase (HGXPRT), isoform D, bound to Immucillin-GP, showing the structure of the complete active site in its open conformation

2-Gaussian fit: Grosse-Kunstleve RW, Sauter NK, Adams PD: Newsletter of the IUCr Commission on Crystallographic Computing 2004, 3, 22-31.

PHOSPHORIC ACID MONO-[5-(2-AMINO-4-OXO-4,5-DIHYDRO-3H-PYRROLO[3,2-D]PYRIMIDIN-7-YL)-3,4-DIHYDROXY-PYRROLIDIN-2-YLMETHYL] ESTER

Kinetic and Structural Characterization of Trypanosoma cruzi Hypoxanthine-Guanine-Xanthine Phosphoribosyltransferases and Repurposing of Transition-State Analogue Inhibitors.

Hypoxanthine-guanine phosphoribosyltransferase

MISSQQAMVHVVSRNAEGVIVVDGKAYPMAEELVATESVIQRSIKAVAKQIADFYRPLSHRDTHGGGGVAPISDENPLII
ISVLKGSYIFTADMVRYLGDYGLPHVVDFLRVASYRGTSSTNKMQLLAETQFKALRGKHVLILEDIVDSGKTLRYILDKV
QREHQPATLKVCVLADKPGGRRVTMQPDFVCLTVPNKYVIGYGFEVNDRFRCFRHIFTLRPGEARRYPAHL

0.2 M lithium sulfate, 24% PEG3350, 0.1 M HEPES, pH 8.0

National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

Hypoxanthine-guanine-xanthine phosphoribosyltransferase, inhibitor, HGXPRT, TRANSFERASE-INHIBITOR complex