1uc0: Difference between revisions

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[[Image:1uc0.jpg|left|200px]]
{{Seed}}
[[Image:1uc0.png|left|200px]]


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{{STRUCTURE_1uc0|  PDB=1uc0  |  SCENE=  }}  
{{STRUCTURE_1uc0|  PDB=1uc0  |  SCENE=  }}  


'''Crystal structure of wild-type hen-egg white lysozyme singly labeled with 2',3'-epoxypropyl beta-glycoside of N-acetyllactosamine'''
===Crystal structure of wild-type hen-egg white lysozyme singly labeled with 2',3'-epoxypropyl beta-glycoside of N-acetyllactosamine===




==Overview==
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In spite of the belonging to the same c-type lysozyme family, hen egg-white lysozyme (HEWL) was much less susceptible to the dual-affinity labeling with 2',3'-epoxypropyl beta-glycoside of N-acetyllactosamine (Galbeta1,4GlcNAc-Epo) than human lysozyme (HL). The three-dimensional structures of the HEWL labeled with single Galbeta1,4GlcNAc-Epo and the Glu102-mutant HL labeled with double Galbeta1,4GlcNAc-Epo were determined by X-ray crystallography at resolutions of 1.85 and 2.0 A, respectively. The overall conformation and the interaction mode of the carbohydrate ligand part in the singly labeled HEWL and the doubly labeled Glu102-mutant HL were basically identical to those of the correspondingly labeled wild-type HL with minor alterations in some stereochemical parameters. A detailed comparison of the structures revealed the key protein-carbohydrate and carbohydrate-carbohydrate interactions essential for the dual labeling. It was suggested that the difference in the efficiency of the dual labeling was caused by the structural difference between Gln104 in HL and Asn103 in HEWL. The relevance to our previous study and the carbohydrate-carbohydrate interaction on cell-surface membranes were discussed.
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{{ABSTRACT_PUBMED_12720276}}


==About this Structure==
==About this Structure==
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[[Category: Muraki, M.]]
[[Category: Muraki, M.]]
[[Category: Protein-carbohydrate complex]]
[[Category: Protein-carbohydrate complex]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sat May  3 11:01:27 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Tue Jul 29 06:07:54 2008''

Revision as of 03:07, 29 July 2008

File:1uc0.png

Template:STRUCTURE 1uc0

Crystal structure of wild-type hen-egg white lysozyme singly labeled with 2',3'-epoxypropyl beta-glycoside of N-acetyllactosamine

Template:ABSTRACT PUBMED 12720276

About this Structure

1UC0 is a Single protein structure of sequence from Gallus gallus. Full crystallographic information is available from OCA.

Reference

X-ray structural analysis of the ligand-recognition mechanism in the dual-affinity labeling of c-type lysozyme with 2',3'-epoxypropyl beta-glycoside of N-acetyllactosamine., Muraki M, Harata K, J Mol Recognit. 2003 Mar-Apr;16(2):72-82. PMID:12720276

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