1cx7: Difference between revisions

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[[Image:1cx7.gif|left|200px]]
{{Seed}}
[[Image:1cx7.png|left|200px]]


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{{STRUCTURE_1cx7|  PDB=1cx7  |  SCENE=  }}  
{{STRUCTURE_1cx7|  PDB=1cx7  |  SCENE=  }}  


'''T4 LYSOZYME METHIONINE CORE MUTANT'''
===T4 LYSOZYME METHIONINE CORE MUTANT===




==Overview==
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Using heavily methionine-substituted T4 lysozyme as an example, it is shown how the addition or deletion of a small number of methionines can simplify the location of selenium sites for use in MAD phasing. By comparing the X-ray data for a large number of singly substituted lysozymes, it is shown that the optimal amino acid to be substituted by methionine is leucine, followed, in order of preference, by phenylalanine, isoleucine and valine. The identification of leucine as the first choice agrees with the ranking suggested by the Dayhoff mutation probability, i.e. by the frequency of amino-acid substitutions in the sequences of related proteins. The ranking of the second and subsequent choices, however, differ significantly.
The line below this paragraph, {{ABSTRACT_PUBMED_10666571}}, adds the Publication Abstract to the page
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{{ABSTRACT_PUBMED_10666571}}


==About this Structure==
==About this Structure==
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[[Category: Protein folding]]
[[Category: Protein folding]]
[[Category: T4 lysozyme]]
[[Category: T4 lysozyme]]
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