1jui: Difference between revisions

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[[Image:1jui.gif|left|200px]]
{{Seed}}
[[Image:1jui.png|left|200px]]


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{{STRUCTURE_1jui|  PDB=1jui  |  SCENE=  }}  
{{STRUCTURE_1jui|  PDB=1jui  |  SCENE=  }}  


'''CONCANAVALIN A-CARBOHYDRATE MIMICKING 10-MER PEPTIDE COMPLEX'''
===CONCANAVALIN A-CARBOHYDRATE MIMICKING 10-MER PEPTIDE COMPLEX===




==Overview==
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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.
The line below this paragraph, {{ABSTRACT_PUBMED_11371463}}, adds the Publication Abstract to the page
(as it appears on PubMed at http://www.pubmed.gov), where 11371463 is the PubMed ID number.
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{{ABSTRACT_PUBMED_11371463}}


==About this Structure==
==About this Structure==
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[[Category: Salunke, D M.]]
[[Category: Salunke, D M.]]
[[Category: Lectin]]
[[Category: Lectin]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 21:56:29 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 1 20:54:26 2008''

Revision as of 17:54, 1 July 2008

File:1jui.png

Template:STRUCTURE 1jui

CONCANAVALIN A-CARBOHYDRATE MIMICKING 10-MER PEPTIDE COMPLEX

Template:ABSTRACT PUBMED 11371463

About this Structure

1JUI is a Single protein structure of sequence from Canavalia ensiformis. Full crystallographic information is available from OCA.

Reference

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

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