1jyc

CONCANAVALIN A/15-mer PEPTIDE COMPLEX

spinqualitylabelsall models 1jyc, resolution 2.75Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1jyc is a 8 chain structure with sequence from Canavalia ensiformis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CA, MN Related: 1joj, 1jui, 1jyi Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [CONA_CANBR] Glucose/D-mannose specific lectin. Has anti-inflammatory activity in rats. Induces histamine release in mast cells from hamster and rat. Induces lymphocyte proliferation and IFNG production. Shows toxicity against the aquatic snail B.glabrata at concentrations higher than 20 ug/ml. 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 structures of concanavalin A (ConA) in complex with two carbohydrate-mimicking peptides, 10-mer (MYWYPYASGS) and 15-mer (RVWYPYGSYLTASGS) have been determined at 2.75 A resolution. In both crystal structures four independent peptide molecules bind to each of the crystallographically independent subunits of ConA tetramer. The peptides exhibit small but significant variability in conformations and interactions while binding to ConA. The crystal structure of another similar peptide, 12-mer (DVFYPYPYASGS), in complex with ConA has been determined (Jain, D., K. J. Kaur, B. Sundaravadivel, and D. M. Salunke. 2000. Structural and functional consequences of peptide-carbohydrate mimicry. J. Biol. Chem. 275:16098-16102). Comparison of the three complexes shows that the peptides bind to ConA at a common binding site, using different contacting residues and interactions depending on their sequence and the local environment at the binding site. The binding is also optimized by corresponding plasticity of the peptide binding site on ConA. The diversity in conformation and interactions observed here are in agreement with the structural leeway concerning plasticity of specific molecular recognition in biological processes. The adaptability of peptide-ConA interactions may also be correlated with the carbohydrate-mimicking property of these peptides. Plasticity in protein-peptide recognition: crystal structures of two different peptides bound to concanavalin A.,Jain D, Kaur KJ, Salunke DM Biophys J. 2001 Jun;80(6):2912-21. PMID:11371463 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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