1dwq | pdb_00001dwq

Crystal Structure of Hydroxynitrile Lyase from Manihot esculenta in Complex with Substrates Acetone and Chloroacetone:Implications for the Mechanism of Cyanogenesis

spinqualitylabelsall models 1dwq, resolution 2.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1dwq is a 2 chain structure with sequence from Manihot esculenta. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2.2Å Ligands: ATO, CSA Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function HNL_MANES Involved in cyanogenesis, the release of HCN from injured tissues. Decomposes a varieties of (R) or (S) cyanohydrins into HCN and the corresponding aldehydes and ketones. The natural substrate of this enzyme is (S)-acetone cyanohydrin. 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 The crystal structures of hydroxynitrile lyase from Manihot esculenta (MeHNL) complexed with the native substrate acetone and substrate analogue chloroacetone have been determined and refined at 2.2 A resolution. The substrates are positioned in the active site by hydrogen-bond interactions of the carbonyl O atom with Thr11 OG, Ser80 OG and, to a lesser extent, Cys81 SG. These studies support a mechanism for cyanogenesis as well as for the stereospecific MeHNL-catalyzed formation of (S)-cyanohydrins, which closely resembles the base-catalyzed chemical reaction of HCN with carbonyl compounds. Structure of hydroxynitrile lyase from Manihot esculenta in complex with substrates acetone and chloroacetone: implications for the mechanism of cyanogenesis.,Lauble H, Forster S, Miehlich B, Wajant H, Effenberger F Acta Crystallogr D Biol Crystallogr. 2001 Feb;57(Pt 2):194-200. PMID:11173464 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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