4dzw | pdb_00004dzw

Crystal Structure of Trypanosome cruzi farnesyl diphosphate synthase in complex with [2-(cyclohexylamino)ethane-1,1-diyl]bisphosphonic acid and Mg2+

spinqualitylabelsall models 4dzw, resolution 3.05Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4dzw is a 1 chain structure with sequence from Trypanosoma cruzi. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 3.05Å Ligands: 0MQ, FME, IPE, MG, SO4 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function Q95WL3_TRYCR Publication Abstract from PubMed Linear 2-alkylaminoethyl-1,1-bisphosphonates are effective agents against proliferation of Trypanosoma cruzi , the etiologic agent of American trypanosomiasis (Chagas disease), exhibiting IC(50) values in the nanomolar range against the parasites. This activity is associated with inhibition at the low nanomolar level of the T. cruzi farnesyl diphosphate synthase (TcFPPS). X-ray structures and thermodynamic data of the complexes TcFPPS with five compounds of this family show that the inhibitors bind to the allylic site of the enzyme, with their alkyl chain occupying the cavity that binds the isoprenoid chain of the substrate. The compounds bind to TcFPPS with unfavorable enthalpy compensated by a favorable entropy that results from a delicate balance between two opposing effects: the loss of conformational entropy due to freezing of single bond rotations and the favorable burial of the hydrophobic alkyl chains. The data suggest that introduction of strategically placed double bonds and methyl branches should increase affinity substantially. Design, synthesis, calorimetry, and crystallographic analysis of 2-alkylaminoethyl-1,1-bisphosphonates as inhibitors of Trypanosoma cruzi farnesyl diphosphate synthase.,Aripirala S, Szajnman SH, Jakoncic J, Rodriguez JB, Docampo R, Gabelli SB, Amzel LM J Med Chem. 2012 Jul 26;55(14):6445-54. Epub 2012 Jul 5. PMID:22715997 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Farnesyl diphosphate synthase 3D structures

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