1wuv: Difference between revisions

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


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{{STRUCTURE_1wuv|  PDB=1wuv  |  SCENE=  }}  
{{STRUCTURE_1wuv|  PDB=1wuv  |  SCENE=  }}  


'''Crystal structure of native Canavalia gladiata lectin (CGL): a tetrameric ConA-like lectin'''
===Crystal structure of native Canavalia gladiata lectin (CGL): a tetrameric ConA-like lectin===




==Overview==
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BACKGROUND: Lectins are mainly described as simple carbohydrate-binding proteins. Previous studies have tried to identify other binding sites, which possible recognize plant hormones, secondary metabolites, and isolated amino acid residues. We report the crystal structure of a lectin isolated from Canavalia gladiata seeds (CGL), describing a new binding pocket, which may be related to pathogen resistance activity in ConA-like lectins; a site where a non-protein amino-acid, alpha-aminobutyric acid (Abu), is bound. RESULTS: The overall structure of native CGL and complexed with alpha-methyl-mannoside and Abu have been refined at 2.3 A and 2.31 A resolution, respectively. Analysis of the electron density maps of the CGL structure shows clearly the presence of Abu, which was confirmed by mass spectrometry. CONCLUSION: The presence of Abu in a plant lectin structure strongly indicates the ability of lectins on carrying secondary metabolites. Comparison of the amino acids composing the site with other legume lectins revealed that this site is conserved, providing an evidence of the biological relevance of this site. This new action of lectins strengthens their role in defense mechanisms in plants.
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{{ABSTRACT_PUBMED_17683532}}


==About this Structure==
==About this Structure==
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[[Category: Native protein]]
[[Category: Native protein]]
[[Category: Plant protein]]
[[Category: Plant protein]]
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Revision as of 05:24, 28 July 2008

File:1wuv.png

Template:STRUCTURE 1wuv

Crystal structure of native Canavalia gladiata lectin (CGL): a tetrameric ConA-like lectin

Template:ABSTRACT PUBMED 17683532

About this Structure

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

Reference

Structure of a lectin from Canavalia gladiata seeds: new structural insights for old molecules., Delatorre P, Rocha BA, Souza EP, Oliveira TM, Bezerra GA, Moreno FB, Freitas BT, Santi-Gadelha T, Sampaio AH, Azevedo WF Jr, Cavada BS, BMC Struct Biol. 2007 Aug 2;7:52. PMID:17683532

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