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2gnb

From Proteopedia

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[[Image:2gnb.gif|left|200px]]
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{{STRUCTURE_2gnb| PDB=2gnb | SCENE= }}
{{STRUCTURE_2gnb| PDB=2gnb | SCENE= }}
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'''EDTA-treated (2 weeks) P. angolensis lectin'''
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===EDTA-treated (2 weeks) P. angolensis lectin===
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==Overview==
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The interplay between metal binding, carbohydrate binding activity, stability and structure of the lectin from Pterocarpus angolensis was investigated. Removal of the metals leads to a more flexible form of the protein with significantly less conformational stability. Crystal structures of this metal-free form show significant structural rearrangements, although some structural features that allow the binding of sugars are retained. We propose that substitution of an asparagine residue at the start of the C-terminal beta-strand of the legume lectin monomer hinders the trans-isomerization of the cis-peptide bond upon demetallization and constitutes an intramolecular switch governing the isomer state of the non-proline bond and ultimately the lectin phenotype.
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(as it appears on PubMed at http://www.pubmed.gov), where 16824540 is the PubMed ID number.
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{{ABSTRACT_PUBMED_16824540}}
==About this Structure==
==About this Structure==
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[[Category: Metal-free lectin,edta treatment]]
[[Category: Metal-free lectin,edta treatment]]
[[Category: Sugar complex]]
[[Category: Sugar complex]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 05:18:08 2008''
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Mon Jul 28 16:34:10 2008''

Revision as of 13:34, 28 July 2008

Image:2gnb.png

Template:STRUCTURE 2gnb

EDTA-treated (2 weeks) P. angolensis lectin

Template:ABSTRACT PUBMED 16824540

About this Structure

2GNB is a Single protein structure of sequence from Pterocarpus angolensis. Full crystallographic information is available from OCA.

Reference

Interplay between metal binding and cis/trans isomerization in legume lectins: structural and thermodynamic study of P. angolensis lectin., Garcia-Pino A, Buts L, Wyns L, Loris R, J Mol Biol. 2006 Aug 4;361(1):153-67. Epub 2006 Jun 21. PMID:16824540

Page seeded by OCA on Mon Jul 28 16:34:10 2008

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