PMID- 12044862 OWN - NLM STAT- MEDLINE DCOM- 20020703 LR - 20141120 IS - 0014-5793 (Print) IS - 0014-5793 (Linking) VI - 520 IP - 1-3 DP - 2002 Jun 5 TI - Structure of Trypanosoma cruzi glycosomal glyceraldehyde-3-phosphate dehydrogenase complexed with chalepin, a natural product inhibitor, at 1.95 A resolution. PG - 13-7 AB - The structure of the glycosomal glyceraldehyde-3-phosphate dehydrogenase (gGAPDH) from Trypanosoma cruzi complexed with chalepin, a natural product from Pilocarpus spicatus, has been determined by X-ray crystallography to 1.95 A resolution. The structure is in the apo form without cofactors in the subunits of the tetrameric gGAPDH in the asymmetric unit. Unequivocal density corresponding to the inhibitor was clearly identified in one monomer. The final refined model of the complex shows extensive conformational changes when compared with the native structure. The mode of binding of chalepin to gGAPDH and its implications for inhibitor design are discussed. FAU - Pavao, F AU - Pavao F AD - Instituto de Quimica de Sao Carlos, USP, Sao Carlos, SP, Brazil. FAU - Castilho, M S AU - Castilho MS FAU - Pupo, M T AU - Pupo MT FAU - Dias, R L A AU - Dias RL FAU - Correa, A G AU - Correa AG FAU - Fernandes, J B AU - Fernandes JB FAU - da Silva, M F G F AU - da Silva MF FAU - Mafezoli, J AU - Mafezoli J FAU - Vieira, P C AU - Vieira PC FAU - Oliva, G AU - Oliva G LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - FEBS Lett JT - FEBS letters JID - 0155157 RN - 0 (Furocoumarins) RN - 0 (Macromolecular Substances) RN - 13164-04-0 (chalepin) RN - EC 1.2.1.- (Glyceraldehyde-3-Phosphate Dehydrogenases) SB - IM MH - Animals MH - Crystallization MH - Crystallography, X-Ray MH - Furocoumarins/*chemistry/metabolism MH - Glyceraldehyde-3-Phosphate Dehydrogenases/*chemistry/genetics/metabolism MH - Macromolecular Substances MH - Microbodies/*enzymology MH - Molecular Structure MH - Protein Binding MH - Structure-Activity Relationship MH - Trypanosoma cruzi/*enzymology/genetics EDAT- 2002/06/05 10:00 MHDA- 2002/07/04 10:01 CRDT- 2002/06/05 10:00 PHST- 2002/06/05 10:00 [pubmed] PHST- 2002/07/04 10:01 [medline] PHST- 2002/06/05 10:00 [entrez] AID - S001457930202700X [pii] PST - ppublish SO - FEBS Lett. 2002 Jun 5;520(1-3):13-7.