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Reference Report
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| Citation | Singh, R., Valcarcel, J., Green, M.R. (1995). Distinct binding specificities and functions of higher eukaryotic polypyrimidine tract-binding proteins. Science 268(5214): 1173--1176. (Export to RIS) | ||
| FlyBase ID | FBrf0083605 | ||
| Publication Type | Research paper | ||
| PubMed ID | 7761834 | ||
| PubMed Abstract | In higher eukaryotes, the polypyrimidine-tract (Py-tract) adjacent to the 3' splice site is recognized by several proteins, including the essential splicing factor U2AF65, the splicing regulator Sex-lethal (Sxl), and polypyrimidine tract-binding protein (PTB), whose function is unknown. Iterative in vitro genetic selection was used to show that these proteins have distinct sequence preferences. The uridine-rich degenerate sequences selected by U2AF65 are similar to those present in the diverse array of natural metazoan Py-tracts. In contrast, the Sxl-consensus is a highly specific sequence, which can help explain the ability of Sxl to regulate splicing of transformer pre-mRNA and autoregulate splicing of its own pre-mRNA. The PTB-consensus is not a typical Py-tract; it can be found in certain alternatively spliced pre-mRNAs that undergo negative regulation. Here it is shown that PTB can regulate alternative splicing by selectively repressing 3' splice sites that contain a PTB-binding site. | ||
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| Language of Publication | English | ||
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| Publication Type | Journal | ||
| Abbreviation | Science | ||
| Title | Science | ||
| Publication Year | 1895- | ||
| ISBN/ISSN | 0036-8075 | ||
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Data from Reference
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| Genes (2)
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