5tuo

Crystal structure of the complex of Helicobacter pylori alpha-carbonic anhydrase with 5-amino-1,3,4-thiadiazole-2-sulfonamide inhibitor.

spinqualitylabelsall models 5tuo, resolution 2.50Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 5tuo is a 8 chain structure with sequence from Helicobacter pylori 26695. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.5Å Ligands: 1SA, CL, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function A0A0M3KL20_HELPY Publication Abstract from PubMed alpha-Carbonic anhydrase of Helicobacter pylori (HpalphaCA) plays an important role in the acclimation of this oncobacterium to the acidic pH of the stomach. Sulfonamide inhibitors of HpalphaCA possess anti-H. pylori activity. The crystal structures of complexes of HpalphaCA with a family of acetazolamide-related sulfonamides have been determined. Analysis of the structures revealed that the mode of sulfonamide binding correlates well with their inhibitory activities. In addition, comparisons with the corresponding inhibitor complexes of human carbonic anhydrase II (HCAII) indicated that HpalphaCA possesses an additional, alternative binding site for sulfonamides that is not present in HCAII. Furthermore, the hydrophobic pocket in HCAII that stabilizes the apolar moiety of sulfonamide inhibitors is replaced with a more open, hydrophilic pocket in HpalphaCA. Thus, our analysis identified major structural features can be exploited in the design of selective and more potent inhibitors of HpalphaCA that may lead to novel antimicrobials. Structure-Activity Relationship for Sulfonamide Inhibition of Helicobacter pylori alpha-Carbonic Anhydrase.,Modak JK, Liu YC, Supuran CT, Roujeinikova A J Med Chem. 2016 Dec 22;59(24):11098-11109. doi: 10.1021/acs.jmedchem.6b01333., Epub 2016 Dec 8. PMID:28002963 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Carbonic anhydrase 3D structures

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