1cjp: Difference between revisions

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


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{{STRUCTURE_1cjp|  PDB=1cjp  |  SCENE=  }}  
{{STRUCTURE_1cjp|  PDB=1cjp  |  SCENE=  }}  


'''CONCANAVALIN A COMPLEX WITH 4'-METHYLUMBELLIFERYL-ALPHA-D-GLUCOPYRANOSIDE'''
===CONCANAVALIN A COMPLEX WITH 4'-METHYLUMBELLIFERYL-ALPHA-D-GLUCOPYRANOSIDE===




==Overview==
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Concanavalin A (Con A) is the best known plant lectin, with important biological properties arising from its specific saccharide-binding ability. Its exact biological role still remains unknown. The complex of Con A with 4'-methylumbelliferyl-alpha-D-glucopyranoside (alpha-MUG) has been crystallized in space group P2(1) with cell dimensions a = 81.62 A, b = 128.71 A, c = 82.23 A, and beta = 118.47 degrees. X-ray diffraction intensities to 2.78 A have been collected. The structure of the complex was solved by molecular replacement and refined by simulated annealing methods to a crystallographic R-factor value of 0.182 and a free-R-factor value of 0.216. The asymmetric unit contains four subunits arranged as a tetramer, with approximate 222 symmetry. A saccharide molecule is bound in the sugar-binding site at the surface of each subunit, with the nonsugar (aglycon) part adopting a different orientation in each subunit. The aglycon orientation, although probably determined by packing of tetramers in the crystal lattice, helps to characterize the orientation of the saccharide in the sugar-binding pocket. The structure is the best determined alpha-D-glucoside:Con A complex to date and the hydrogen bonding network in the saccharide-binding site can be described with some confidence and compared with that of the alpha-D-mannosides.
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{{ABSTRACT_PUBMED_9087912}}


==About this Structure==
==About this Structure==
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[[Category: Tucker, P A.]]
[[Category: Tucker, P A.]]
[[Category: Legume lectin]]
[[Category: Legume lectin]]
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Revision as of 17:50, 30 June 2008

File:1cjp.png

Template:STRUCTURE 1cjp

CONCANAVALIN A COMPLEX WITH 4'-METHYLUMBELLIFERYL-ALPHA-D-GLUCOPYRANOSIDE

Template:ABSTRACT PUBMED 9087912

About this Structure

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

Reference

The crystal structure of the complex of concanavalin A with 4'-methylumbelliferyl-alpha-D-glucopyranoside., Hamodrakas SJ, Kanellopoulos PN, Pavlou K, Tucker PA, J Struct Biol. 1997 Feb;118(1):23-30. PMID:9087912

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