1jyi
From Proteopedia
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| - | [[Image:1jyi.gif|left|200px]] | + | [[Image:1jyi.gif|left|200px]] |
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| - | '''CONCANAVALIN A/12-MER PEPTIDE COMPLEX''' | + | {{Structure |
| + | |PDB= 1jyi |SIZE=350|CAPTION= <scene name='initialview01'>1jyi</scene>, resolution 2.75Å | ||
| + | |SITE= | ||
| + | |LIGAND= <scene name='pdbligand=MN:MANGANESE+(II)+ION'>MN</scene> and <scene name='pdbligand=CA:CALCIUM ION'>CA</scene> | ||
| + | |ACTIVITY= | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''CONCANAVALIN A/12-MER PEPTIDE COMPLEX''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1JYI is a [ | + | 1JYI is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Canavalia_ensiformis Canavalia ensiformis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JYI OCA]. |
==Reference== | ==Reference== | ||
| - | Structural and functional consequences of peptide-carbohydrate mimicry. Crystal structure of a carbohydrate-mimicking peptide bound to concanavalin A., Jain D, Kaur K, Sundaravadivel B, Salunke DM, J Biol Chem. 2000 May 26;275(21):16098-102. PMID:[http:// | + | Structural and functional consequences of peptide-carbohydrate mimicry. Crystal structure of a carbohydrate-mimicking peptide bound to concanavalin A., Jain D, Kaur K, Sundaravadivel B, Salunke DM, J Biol Chem. 2000 May 26;275(21):16098-102. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10821862 10821862] |
[[Category: Canavalia ensiformis]] | [[Category: Canavalia ensiformis]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: lectin]] | [[Category: lectin]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 12:10:11 2008'' |
Revision as of 10:10, 20 March 2008
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| , resolution 2.75Å | |||||||
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| Ligands: | and | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
CONCANAVALIN A/12-MER PEPTIDE COMPLEX
Overview
The functional consequences of peptide-carbohydrate mimicry were analyzed on the basis of the crystal structure of concanavalin A (ConA) in complex with a carbohydrate-mimicking peptide, DVFYPYPYASGS. The peptide binds to the non-crystallographically related monomers of two independent dimers of ConA in two different modes, in slightly different conformations, demonstrating structural adaptability in ConA-peptide recognition. In one mode, the peptide has maximum interactions with ConA, and in the other, it shows relatively fewer contacts within this site but significant contacts with the symmetry-related subunit. Neither of the peptide binding sites overlaps with the structurally characterized mannose and trimannose binding sites on ConA. Despite this, the functional mimicry between the peptide and carbohydrate ligands was evident. The peptide-inhibited ConA induced T cell proliferation in a dose-dependent manner. The effect of the designed analogs of the peptide on ConA-induced T cell proliferation and their recognition by the antibody response against alpha-d-mannopyranoside indicate a role for aromatic residues in functional mimicry. Although the functional mimicry was observed between the peptide and carbohydrate moieties, the crystal structure of the ConA-peptide complex revealed that the two peptide binding sites are independent of the methyl alpha-d-mannopyranoside binding site.
About this Structure
1JYI is a Single protein structure of sequence from Canavalia ensiformis. Full crystallographic information is available from OCA.
Reference
Structural and functional consequences of peptide-carbohydrate mimicry. Crystal structure of a carbohydrate-mimicking peptide bound to concanavalin A., Jain D, Kaur K, Sundaravadivel B, Salunke DM, J Biol Chem. 2000 May 26;275(21):16098-102. PMID:10821862
Page seeded by OCA on Thu Mar 20 12:10:11 2008
Categories: Canavalia ensiformis | Single protein | Jain, D. | Kaur, K J. | Salunke, D M. | Sundaravadivel, B. | CA | MN | Lectin
