1dzb

Crystal structure of phage library-derived single-chain Fv fragment 1F9 in complex with turkey egg-white lysozyme

spinqualitylabelsall models 1dzb, resolution 2.00Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1dzb is a 4 chain structure with sequence from Meleagris gallopavo and Mus musculus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Related: 1lz2, 2lz2, 3lz2, 1lz3, 1lzy, 1jef, 1tew, 1jse Activity: Lysozyme, with EC number 3.2.1.17 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [LYSC_MELGA] Lysozymes have primarily a bacteriolytic function; those in tissues and body fluids are associated with the monocyte-macrophage system and enhance the activity of immunoagents. 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 structure of the single-chain Fv fragment 1F9 in complex with turkey egg-white lysozyme (TEL) has been determined to a nominal resolution of 2.0 A by X-ray diffraction. The scFv fragment 1F9 was derived from phage-display libraries in two steps and binds both hen and turkey egg-white lysozyme, although the level of binding affinity is two orders of magnitude greater for the turkey lysozyme. The comparison of the crystal structure with a model of the single-chain Fv fragment 1F9 in complex with hen egg-white lysozyme (HEL) reveals that in the latter a clash between Asp101 in lysozyme and Trp98 of the complementarity determining region H3 of the heavy chain variable domain occurs. This is the only explanation apparent from the crystal structure for the better binding of TEL compared to HEL.The binding site topology on the paratope is not simply a planar surface as is usually found in antibody-protein interfaces, but includes a cleft between the light chain variable domain and heavy chain variable domain large enough to accommodate a loop from the lysozyme. The scFv fragment 1F9 recognizes an epitope on TEL that differs from the three antigenic determinants recognized in other known crystal structures of monoclonal antibodies in complex with lysozyme. Crystal structure of a phage library-derived single-chain Fv fragment complexed with turkey egg-white lysozyme at 2.0 A resolution.,Ay J, Keitel T, Kuttner G, Wessner H, Scholz C, Hahn M, Hohne W J Mol Biol. 2000 Aug 11;301(2):239-46. PMID:10926506 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Antibody 3D structures Lysozyme 3D structures Monoclonal Antibodies 3D structures

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