SGD Paper 
Yamazaki RK and Chau V (1996) Bacterial expression of the Saccharomyces cerevisiae ubiquitin-conjugating enzyme Ubc7. Protein Expr Purif 7(1):122-7
Abstract: The coding sequence for the yeast ubiquitin-conjugating enzyme Ubc7 was obtained by PCR from Saccharomyces cerevisiae genomic DNA. This sequence was placed in a plasmid containing the lambdaPL promoter and was used for temperature-regulated expression in Escherichia coli. The expressed 18-kDa protein was isolated in the inclusion body fraction from bacterial lysates, in contrast to the soluble nature of other yeast ubiquitin-conjugating enzymes expressed in E. coli. Selective solubilization of the protein using 5 M urea followed by dialysis, MonoQ FPLC, and Superdex-75 FPLC yielded electrophoretically pure Ubc7 protein. The purified protein was enzymatically active as determined by formation of enzyme-linked thiolester with ubiquitin. The ability of Ubc7 protein to regain enzymatic activity after urea denaturation appears to be attributable to the stable core alpha/beta folded structure common to the ubiquitin-conjugating enzymes whose structures have been determined to date.
| Status: Published | Type: Journal Article | PubMed ID: 9172777 |
Topics addressed in this paper
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| Topics | Genes linked to topics |
|---|---|
| UBC7 | |
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| Protein Physical Properties | |
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