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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Lees-miller, S. P. Fiscella, M. Mercer, W. E. Anderson, C. W. Appella, E. Ullrich, S. J. Sakaguchi, K. |
| Description | Author Affiliation: Ullrich SJ ( Laboratory of Cell Biology, National Cancer Institute, Bethesda, MD 20892.); |
| Abstract | The product of the p53 gene suppresses cell growth and plays a critical role in suppressing development of human tumors. p53 protein binds DNA, activates transcription, and can be phosphorylated at N- and C-terminal sites. Previously, wild-type p53 was shown to be hyperphosphorylated compared to mutant p53 during p53-mediated growth arrest in vivo. Here we show that Ser-15 and Ser-9 in the N-terminal transactivation domain of wild-type human p53 are phosphorylated in vivo in cells derived from the human glioblastoma line T98G. In [Ile237]p53 and [Ala143]p53, two natural p53 mutants from human tumors that are defective for activation of transcription, phosphorylation at Ser-15 was reduced and phosphorylation at Ser-392 was increased compared to wild-type p53. No change was observed at Ser-9. [His273]p53, a third mutant, had a phosphorylation state similar to that of wild-type p53. We suggest that phosphorylation of Ser-15 may depend on the ability of p53 to adopt a wild-type conformation and may contribute to p53's ability to block cell growth. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 13 |
| Volume Number | 90 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1993-08-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Neoplasms Genetics Serine Metabolism Tumor Suppressor Protein P53 Amino Acid Sequence Molecular Sequence Data Mutation Phosphopeptides Phosphorylation Tumor Cells, Cultured Comparative Study Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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