PMID- 15474496 OWN - NLM STAT- MEDLINE DCOM- 20041220 LR - 20061115 IS - 0006-291X (Print) IS - 0006-291X (Linking) VI - 324 IP - 2 DP - 2004 Nov 12 TI - Crystallographic structure of PNP from Mycobacterium tuberculosis at 1.9A resolution. PG - 789-94 AB - Even being a bacterial purine nucleoside phosphorylase (PNP), which normally shows hexameric folding, the Mycobacterium tuberculosis PNP (MtPNP) resembles the mammalian trimeric structure. The crystal structure of the MtPNP apoenzyme was solved at 1.9 A resolution. The present work describes the first structure of MtPNP in complex with phosphate. In order to develop new insights into the rational drug design, conformational changes were profoundly analyzed and discussed. Comparisons over the binding sites were specially studied to improve the discussion about the selectivity of potential new drugs. FAU - Nolasco, Diego O AU - Nolasco DO AD - Departamento de Fisica, UNESP, Sao Jose do Rio Preto, SP 15054-000, Brazil. FAU - Canduri, Fernanda AU - Canduri F FAU - Pereira, Jose H AU - Pereira JH FAU - Cortinoz, Janaina R AU - Cortinoz JR FAU - Palma, Mario S AU - Palma MS FAU - Oliveira, Jaim S AU - Oliveira JS FAU - Basso, Luiz A AU - Basso LA FAU - de Azevedo, Walter F Jr AU - de Azevedo WF Jr FAU - Santos, Diogenes S AU - Santos DS LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Biochem Biophys Res Commun JT - Biochemical and biophysical research communications JID - 0372516 RN - 0 (Recombinant Proteins) RN - EC 2.4.2.1 (Purine-Nucleoside Phosphorylase) SB - IM MH - Binding Sites MH - Crystallography, X-Ray/*methods MH - Dimerization MH - Drug Design MH - Models, Molecular MH - Mycobacterium tuberculosis/*enzymology MH - Protein Conformation MH - Purine-Nucleoside Phosphorylase/*chemistry MH - Recombinant Proteins/chemistry EDAT- 2004/10/12 09:00 MHDA- 2004/12/21 09:00 CRDT- 2004/10/12 09:00 PHST- 2004/09/01 00:00 [received] PHST- 2004/10/12 09:00 [pubmed] PHST- 2004/12/21 09:00 [medline] PHST- 2004/10/12 09:00 [entrez] AID - S0006-291X(04)02135-7 [pii] AID - 10.1016/j.bbrc.2004.09.137 [doi] PST - ppublish SO - Biochem Biophys Res Commun. 2004 Nov 12;324(2):789-94. doi: 10.1016/j.bbrc.2004.09.137.