2xox

CRYSTAL STRUCTURE OF PTERIDINE REDUCTASE (PTR1) FROM LEISHMANIA DONOVANI

spinqualitylabelsall models 2xox, resolution 2.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2xox is a 2 chain structure with sequence from Leishmania donovani. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: SO4 Activity: Pteridine reductase, with EC number 1.5.1.33 Resources: FirstGlance, OCA, RCSB, PDBsum Publication Abstract from PubMed Pteridine reductase (PTR1) is a potential target for drug development against parasitic Trypanosoma and Leishmania species, protozoa that are responsible for a range of serious diseases found in tropical and subtropical parts of the world. As part of a structure-based approach to inhibitor development, specifically targeting Leishmania species, well ordered crystals of L. donovani PTR1 were sought to support the characterization of complexes formed with inhibitors. An efficient system for recombinant protein production was prepared and the enzyme was purified and crystallized in an orthorhombic form with ammonium sulfate as the precipitant. Diffraction data were measured to 2.5 A resolution and the structure was solved by molecular replacement. However, a sulfate occupies a phosphate-binding site used by NADPH and occludes cofactor binding. The nicotinamide moiety is a critical component of the active site and without it this part of the structure is disordered. The crystal form obtained under these conditions is therefore unsuitable for the characterization of inhibitor complexes. Structure of recombinant Leishmania donovani pteridine reductase reveals a disordered active site.,Barrack KL, Tulloch LB, Burke LA, Fyfe PK, Hunter WN Acta Crystallogr Sect F Struct Biol Cryst Commun. 2011 Jan 1;67(Pt, 1):33-7. Epub 2010 Dec 21. PMID:21206018 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Pteridine reductase

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