2er6 | pdb_00002er6

The structure of a synthetic pepsin inhibitor complexed with endothiapepsin.

spinqualitylabelsall models 2er6, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2er6 is a 2 chain structure with sequence from Cryphonectria parasitica. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: X-ray diffraction, Resolution 2Å Ligands: PUK Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function CARP_CRYPA 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 conformation of a synthetic polypeptide inhibitor, bound to the active site of the fungal aspartic proteinase endothiapepsin (EC 3.4.23.6), has been determined by X-ray diffraction at 0.20-nm resolution and refined to an agreement factor of 0.20. The inhibitor: Pro Thr Glu Phe-R-Phe Arg Glu (R = -CH2NH-) is based on a chromogenic substrate of pepsin (EC 3.4.23.1). It has, in place of the scissile bond, a reduced peptide group which is resistant to hydrolysis and mimics the tetrahedral transition state. The inhibitor binds in an extended conformation with the reduced bond close to the essential aspartate side-chains of the enzyme. The hydrogen bonds and hydrophobic interactions between the enzyme and the inhibitor do not induce large conformational changes. The structure of a synthetic pepsin inhibitor complexed with endothiapepsin.,Cooper J, Foundling S, Hemmings A, Blundell T, Jones DM, Hallett A, Szelke M Eur J Biochem. 1987 Nov 16;169(1):215-21. PMID:3119339 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Pepsin

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