1ree | pdb_00001ree

ENDO-1,4-BETA-XYLANASE II COMPLEX WITH 3,4-EPOXYBUTYL-BETA-D-XYLOSIDE

spinqualitylabelsall models 1ree, resolution 1.60Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1ree is a 2 chain structure with sequence from Hypocrea jecorina. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: 07E, BEZ NonStd Res: PCA Activity: Endo-1,4-beta-xylanase, with EC number 3.2.1.8 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT 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 three-dimensional structures of endo-1,4-xylanase II (XYNII) from Trichoderma reesei complexed with 4,5-epoxypentyl beta-D-xyloside (X-O-C5),3,4-epoxybutyl beta-D-xyloside (X-O-C4), and 2,3-epoxypropyl beta-D-xyloside (X-O-C3) were determined by X-ray crystallography. High-resolution measurement revealed clear electron densities for each ligand. Both X-O-C5 and X-O-C3 were found to form a covalent bond with the putative nucleophile Glu86. Unexpectedly, X-O-C4 was found to bind to the putative acid/base catalyst Glu177. In all three complexes, clear conformational changes were found in XYNII compared to the native structure. These changes were largest in the X-O-C3 complex structure. Covalent binding of three epoxyalkyl xylosides to the active site of endo-1,4-xylanase II from Trichoderma reesei.,Havukainen R, Torronen A, Laitinen T, Rouvinen J Biochemistry. 1996 Jul 23;35(29):9617-24. PMID:8755744 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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