Eukaryotic Cell, June 2002, p. 491-494, Vol. 1, No. 3
1535-9778/02/$04.00+0 DOI: 10.1128/EC.1.3.491-494.2002
Copyright © 2002, American Society for Microbiology. All Rights Reserved.
Department of Biochemistry and Molecular Biology, Indiana University School of Medicine and the Walther Oncology Center, Indianapolis, Indiana 46202,1 Section of Molecular and Cellular Biology, University of CaliforniaDavis, Davis, California 956162
Received 21 December 2001/ Accepted 13 March 2002
In Saccharomyces cerevisiae, Rub1p, like ubiquitin, is conjugated to proteins. Before protein conjugation, the carboxyl-terminal asparagine residue of Rub1p is removed. Rub1p conjugation is dependent on the carboxyl-terminal processing enzyme Yuh1p, whereas Rub1p lacking the asparagine residue is conjugated without Yuh1p. Thus, Yuh1p is the major processing enzyme for Rub1p.
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