3nrr

Co-crystal structure of dihydrofolate reductase-thymidylate synthase from Babesia bovis with dUMP, Raltitrexed and NADP

spinqualitylabelsall models 3nrr, resolution 1.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 3nrr is a 2 chain structure with sequence from Babesia bovis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CL, D16, EDO, GOL, NAP, PO4, UMP Related: 3i3r, 3k2h Gene: BBOV_II000780 (Babesia bovis) Activity: Thymidylate synthase, with EC number 2.1.1.45 Resources: FirstGlance, OCA, RCSB, PDBsum Function [A7ASX7_BABBO] Bifunctional enzyme. Involved in de novo dTMP biosynthesis. Key enzyme in folate metabolism (By similarity).[PIRNR:PIRNR000389] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Babesiosis is a tick-borne disease caused by eukaryotic Babesia parasites which are morphologically similar to Plasmodium falciparum, the causative agent of malaria in humans. Like Plasmodium, different species of Babesia are tuned to infect different mammalian hosts, including rats, dogs, horses and cattle. Most species of Plasmodium and Babesia possess an essential bifunctional enzyme for nucleotide synthesis and folate metabolism: dihydrofolate reductase-thymidylate synthase. Although thymidylate synthase is highly conserved across organisms, the bifunctional form of this enzyme is relatively uncommon in nature. The structural characterization of dihydrofolate reductase-thymidylate synthase in Babesia bovis, the causative agent of babesiosis in livestock cattle, is reported here. The apo state is compared with structures that contain dUMP, NADP and two different antifolate inhibitors: pemetrexed and raltitrexed. The complexes reveal modes of binding similar to that seen in drug-resistant malaria strains and point to the utility of applying structural studies with proven cancer chemotherapies towards infectious disease research. Inhibitor-bound complexes of dihydrofolate reductase-thymidylate synthase from Babesia bovis.,Begley DW, Edwards TE, Raymond AC, Smith ER, Hartley RC, Abendroth J, Sankaran B, Lorimer DD, Myler PJ, Staker BL, Stewart LJ Acta Crystallogr Sect F Struct Biol Cryst Commun. 2011 Sep 1;67(Pt, 9):1070-7. Epub 2011 Aug 16. PMID:21904052 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Dihydrofolate reductase

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