4lym: Difference between revisions

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[[Image:4lym.jpg|left|200px]]
{{Seed}}
[[Image:4lym.png|left|200px]]


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{{STRUCTURE_4lym|  PDB=4lym  |  SCENE=  }}  
{{STRUCTURE_4lym|  PDB=4lym  |  SCENE=  }}  


'''CRYSTAL STRUCTURE OF LOW HUMIDITY TETRAGONAL LYSOZYME AT 2.1-ANGSTROMS RESOLUTION. VARIABILITY IN HYDRATION SHELL AND ITS STRUCTURAL CONSEQUENCES'''
===CRYSTAL STRUCTURE OF LOW HUMIDITY TETRAGONAL LYSOZYME AT 2.1-ANGSTROMS RESOLUTION. VARIABILITY IN HYDRATION SHELL AND ITS STRUCTURAL CONSEQUENCES===




==Overview==
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Tetragonal crystals of hen egg white lysozyme undergo a reversible transformation, accompanied by loss of water, when the relative humidity of the environment is reduced to about 90%. The structure of the low humidity form has been analyzed, using x-ray data collected at 88% relative humidity, in order to explore the variability in protein hydration caused by a change in the amount of water surrounding the protein molecule and the consequent conformational perturbations in the molecule. The structure has been refined by the restrained least-squares method to an R value of 0.162 for 6269 observed reflections in the 10-2.1-A resolution shell. The refined structure provides interesting examples for the variability in helical parameters, the role of interactions involving side chains and water in the stabilization of secondary structural features, and favorable specific hydration sites. The protein molecule as a whole moves slightly in the low humidity form from its position in the native crystals. The hydration shell tends to move along with the protein. Significant changes, however, occur in the hydration shell. These changes cause structural perturbations in the enzyme molecule, which are most pronounced in regions involved in substrate binding.
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{{ABSTRACT_PUBMED_2398048}}


==About this Structure==
==About this Structure==
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[[Category: Suresh, C G.]]
[[Category: Suresh, C G.]]
[[Category: Vijayan, M.]]
[[Category: Vijayan, M.]]
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun May 4 22:26:13 2008''
 
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Jul 3 13:43:16 2008''

Revision as of 10:43, 3 July 2008

File:4lym.png

Template:STRUCTURE 4lym

CRYSTAL STRUCTURE OF LOW HUMIDITY TETRAGONAL LYSOZYME AT 2.1-ANGSTROMS RESOLUTION. VARIABILITY IN HYDRATION SHELL AND ITS STRUCTURAL CONSEQUENCES

Template:ABSTRACT PUBMED 2398048

About this Structure

4LYM is a Single protein structure of sequence from Gallus gallus. Full crystallographic information is available from OCA.

Reference

Crystal structure of low humidity tetragonal lysozyme at 2.1-A resolution. Variability in hydration shell and its structural consequences., Kodandapani R, Suresh CG, Vijayan M, J Biol Chem. 1990 Sep 25;265(27):16126-31. PMID:2398048

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