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| Content Provider | PubMed Central |
|---|---|
| Author | Ben-levy, R. Paterson, H. F. Marshall, C. J. Yarden, Y. |
| Abstract | The transforming potential of the Neu/ErbB-2 receptor tyrosine kinase undergoes inactivation by deletion of the non-catalytic C-terminal tail, which contains five autophosphorylation sites. To determine which site is essential for oncogenicity, we tailed the C-terminally-deleted mutant with individual autophosphorylation sites. Complete restoration of the transforming action in vitro and in vivo was conferred by a stretch of 12 amino acids that contained the most C-terminal tyrosine autophosphorylation site (Y1253). Reconstitution of transformation was specific to this amino acid sequence because none of the other autophosphorylation sites, when grafted individually, caused transformation, and replacement of the tyrosine with a phenylalanine residue significantly reduced the oncogenic potential of both the full-length and the tailed proteins. When present alone the most C-terminal sequence enabled coupling to a biochemical pathway that includes Ras, MAP kinase and transactivation of Jun. These results indicate that the multiplicity of autophosphorylation sites on a receptor tyrosine kinase is not essential for transformability, and implicate the MAP kinase pathway in transduction of the oncogenic signal of Neu/ErbB-2. |
| Starting Page | 3302 |
| File Format | |
| ISSN | 14602075 |
| e-ISSN | 14602075 |
| Journal | The EMBO Journal |
| Issue Number | 14 |
| Volume Number | 13 |
| Language | English |
| Publisher Date | 1994-07-15 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Neuroscience Immunology and Microbiology Medicine Molecular Biology |
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