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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Howley, P. M. Scheffner, M. Huibregtse, J. M. |
| Description | Author Affiliation: Scheffner M ( Deutsches Krebsforschungszentrum, Heidelberg, Germany.); |
| Abstract | The E6 protein of the oncogenic human papillomavirus types 16 and 18 facilitates the rapid degradation of the tumor-suppressor protein p53 via the ubiquitin-dependent proteolytic pathway. The E6 protein binds to a cellular protein of 100 kDa termed E6-AP. The complex of E6 and E6-AP specifically interacts with p53 and induces the ubiquitination of p53 in a reaction which requires the ubiquitin-activating enzyme (E1) and a cellular fraction thought to contain a mammalian ubiquitin-conjugating enzyme (E2). This mammalian E2 activity could be replaced with bacterially expressed UBC8 from Arabidopsis thaliana, which belongs to a subfamily of E2s including yeast UBC4 and UBC5 which are highly conserved at the amino acid level. In this paper we describe the cloning of a human cDNA encoding a human E2 that we have designated UbcH5 and that is related to Arabidopsis UBC8 and the other members of this subfamily. We demonstrate that UbcH5 can function in the E6/E6-AP-induced ubiquitination of p53. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 19 |
| Volume Number | 91 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1994-10-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Ligases Metabolism Tumor Suppressor Protein P53 Ubiquitins Viral Proteins Amino Acid Sequence Cloning, Molecular DNA, Complementary Genetics Molecular Sequence Data Sequence Alignment Sequence Homology, Amino Acid Ubiquitin-Conjugating Enzymes Ubiquitin-Protein Ligases Comparative Study Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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