1lj3: Difference between revisions

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[[Image:1lj3.gif|left|200px]]
{{Seed}}
[[Image:1lj3.png|left|200px]]


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{{STRUCTURE_1lj3|  PDB=1lj3  |  SCENE=  }}  
{{STRUCTURE_1lj3|  PDB=1lj3  |  SCENE=  }}  


'''CRYSTAL STRUCTURE OF MONOCLINIC LYSOZYME GROWN AT PH 4.6'''
===CRYSTAL STRUCTURE OF MONOCLINIC LYSOZYME GROWN AT PH 4.6===




==Overview==
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In pursuance of a long-range programme on the hydration, mobility and action of proteins, the structural basis of the stabilizing effect of sugars and polyols is being investigated. With two crystallographically independent molecules with slightly different packing environments in the crystal, monoclinic lysozyme constitutes an ideal system for exploring the problem. The differences in the structure and hydration of the two molecules provide a framework for examining the changes caused by stabilizing additives. Monoclinic crystals were grown under native conditions and also in the presence of 10% sucrose, 15% trehalose, 10% trehalose, 10% sorbitol and 5% glycerol. The crystal structures were refined at resolutions ranging from 1.8 to 2.1 A. The average B values, and hence the mobility of the structure, are lower in the presence of additives than in the native crystals. However, a comparison of the structures indicates that the effect of the additives on the structure and the hydration shell around the protein molecule is considerably less than that caused by differences in packing. It is also less than that caused by the replacement of NaNO(3) by NaCl as the precipitant in the crystallization experiments. This result is not in conformity with the commonly held belief that additives exert their stabilizing effect through the reorganization of the hydration shell, at least as far as the ordered water molecules are concerned.
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{{ABSTRACT_PUBMED_12077436}}


==About this Structure==
==About this Structure==
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[[Category: Vijayan, M.]]
[[Category: Vijayan, M.]]
[[Category: Hydration of protein]]
[[Category: Hydration of protein]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 23:58:03 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Wed Jul 2 21:00:09 2008''

Revision as of 18:00, 2 July 2008

File:1lj3.png

Template:STRUCTURE 1lj3

CRYSTAL STRUCTURE OF MONOCLINIC LYSOZYME GROWN AT PH 4.6

Template:ABSTRACT PUBMED 12077436

About this Structure

1LJ3 is a Single protein structure of sequence from Gallus gallus. Full crystallographic information is available from OCA.

Reference

Effect of stabilizing additives on the structure and hydration of proteins: a study involving monoclinic lysozyme., Saraswathi NT, Sankaranarayanan R, Vijayan M, Acta Crystallogr D Biol Crystallogr. 2002 Jul;58(Pt 7):1162-7. Epub 2002, Jun 20. PMID:12077436

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