1nlu

Pseudomonas sedolisin (serine-carboxyl proteinase) complexed with two molecules of pseudo-iodotyrostatin

spinqualitylabelsall models 1nlu, resolution 1.30Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1nlu is a 3 chain structure with sequence from Pseudomonas sp.. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 1.3Å Ligands: CA, IVA, PHI, TYB Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function PICP_PSESR 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 High-resolution crystallographic analysis of a complex of the serine-carboxyl proteinase sedolisin with pseudo-iodotyrostatin revealed two molecules of this inhibitor bound in the active site of the enzyme, marking subsites from S3 to S3('). The mode of binding represents two products of the proteolytic reaction. Substrate specificity of sedolisin was investigated using peptide libraries and a new peptide substrate for sedolisin, MCA-Lys-Pro-Pro-Leu-Glu#Tyr-Arg-Leu-Gly-Lys(DNP)-Gly, was synthesized based on the results of the enzymatic and crystallographic studies and was shown to be efficiently cleaved by the enzyme. The kinetic parameters for the substrate, measured by the increase in fluorescence upon relief of quenching, were: k(cat)=73+/-5 s(-1), K(m)=0.12+/-0.011 microM, and k(cat)/K(m)=608+/-85 s(-1)microM(-1). Two inhibitor molecules bound in the active site of Pseudomonas sedolisin: a model for the bi-product complex following cleavage of a peptide substrate.,Wlodawer A, Li M, Gustchina A, Oyama H, Oda K, Beyer BB, Clemente J, Dunn BM Biochem Biophys Res Commun. 2004 Feb 6;314(2):638-45. PMID:14733955 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Pepsin Proteinase 3D structures

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