4lyo: Difference between revisions

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


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{{STRUCTURE_4lyo|  PDB=4lyo  |  SCENE=  }}  
{{STRUCTURE_4lyo|  PDB=4lyo  |  SCENE=  }}  


'''CROSS-LINKED CHICKEN LYSOZYME CRYSTAL IN NEAT ACETONITRILE, THEN BACK-SOAKED IN WATER'''
===CROSS-LINKED CHICKEN LYSOZYME CRYSTAL IN NEAT ACETONITRILE, THEN BACK-SOAKED IN WATER===




==Overview==
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Tetragonal crystals of hen egg white lysozyme were cross-linked and subjected to X-ray diffraction study in acetonitrile-water media with different acetonitrile concentrations. Crystals in neat acetonitrile did not scatter X-ray well. Structures of crystals in neat water, in 90% and 95% acetonitrile, and crystal back-soaked from acetonitrile to water, were determined to about 2 A resolution. For crystals in both 90% acetonitrile, and crystal back-soaked from acetonitrile to water, were determined to about 2 A resolution. For crystals in both 90% and 95% acetonitrile, only one protein-bond acetonitrile molecule is found in the active site cleft, and its location and binding-protein mode is similar to the C subunit of polysaccharide. The alteration in conformation and hydrogen-bond pattern involving water as solvent causes the reduction of the protein's flexibility in organic media. The back-soaked crystal regained its ordinary three-dimensional structure in water.
The line below this paragraph, {{ABSTRACT_PUBMED_9659395}}, adds the Publication Abstract to the page
(as it appears on PubMed at http://www.pubmed.gov), where 9659395 is the PubMed ID number.
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{{ABSTRACT_PUBMED_9659395}}


==About this Structure==
==About this Structure==
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[[Category: Hydrolase]]
[[Category: Hydrolase]]
[[Category: Lysozyme]]
[[Category: Lysozyme]]
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