1jac: Difference between revisions

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


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{{STRUCTURE_1jac|  PDB=1jac  |  SCENE=  }}  
{{STRUCTURE_1jac|  PDB=1jac  |  SCENE=  }}  


'''A NOVEL MODE OF CARBOHYDRATE RECOGNITION IN JACALIN, A MORACEAE PLANT LECTIN WITH A BETA-PRISM'''
===A NOVEL MODE OF CARBOHYDRATE RECOGNITION IN JACALIN, A MORACEAE PLANT LECTIN WITH A BETA-PRISM===




==Overview==
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Jacalin, a tetrameric two-chain lectin (66,000 Mr) from jackfruit seeds, is highly specific for the tumour associated T-antigenic disaccharide. The crystal structure of jacalin with methyl-alpha-D-galactose reveals that each subunit has a three-fold symmetric beta-prism fold made up of three four-stranded beta-sheets. The lectin exhibits a novel carbohydrate-binding site involving the N terminus of the alpha-chain which is generated through a post-translational modification involving proteolysis, the first known instance where such a modification has been used to confer carbohydrate specificity. This new lectin fold may be characteristic of the Moraceae plant family. The structure provides an explanation for the relative affinities of the lectin for galactose derivatives and provides insights into the structural basis of its T-antigen specificity.
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{{ABSTRACT_PUBMED_8673603}}


==About this Structure==
==About this Structure==
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[[Category: Lectin]]
[[Category: Lectin]]
[[Category: Non-legume]]
[[Category: Non-legume]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May  2 20:58:32 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Jul 27 20:03:35 2008''

Revision as of 17:03, 27 July 2008

File:1jac.png

Template:STRUCTURE 1jac

A NOVEL MODE OF CARBOHYDRATE RECOGNITION IN JACALIN, A MORACEAE PLANT LECTIN WITH A BETA-PRISM

Template:ABSTRACT PUBMED 8673603

About this Structure

1JAC is a Protein complex structure of sequences from Artocarpus heterophyllus. Full crystallographic information is available from OCA.

Reference

A novel mode of carbohydrate recognition in jacalin, a Moraceae plant lectin with a beta-prism fold., Sankaranarayanan R, Sekar K, Banerjee R, Sharma V, Surolia A, Vijayan M, Nat Struct Biol. 1996 Jul;3(7):596-603. PMID:8673603

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