A conserved asparagine has a structural role in ubiquitin-conjugating enzymes

被引:0
|
作者
Berndsen C.E. [1 ,2 ,3 ]
Wiener R. [1 ,2 ]
Yu I.W. [1 ]
Ringel A.E. [1 ]
Wolberger C. [1 ,2 ]
机构
[1] Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD
[2] Howard Hughes Medical Institute, Johns Hopkins University School of Medicine, Baltimore, MD
[3] Department of Chemistry and Biochemistry, James Madison University, Harrisonburg, VA
基金
美国国家科学基金会;
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D O I
10.1038/nchembio.1159
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学科分类号
摘要
It is widely accepted that ubiquitin-conjugating enzymes contain an active site asparagine that serves as an oxyanion hole, thereby stabilizing a negatively charged transition state intermediate and promoting ubiquitin transfer. Using structural and biochemical approaches to study the role of the conserved asparagine to ubiquitin conjugation by Ubc13-Mms2, we conclude that the importance of this residue stems primarily from its structural role in stabilizing an active site loop. © 2013 Nature America, Inc. All rights reserved.
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页码:154 / 156
页数:2
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