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| Content Provider | PubMed Central |
|---|---|
| Author | Schuldiner, O. Eden, A. Ben Yosef, T. Yanuka, O. Simchen, G. Benvenisty, N. |
| Abstract | The c-myc oncogene has been shown to play a role in cell proliferation and apoptosis. The realization that myc oncogenes may control the level of expression of other genes has opened the field to search for genetic targets for Myc regulation. Recently, using a subtraction/coexpression strategy, a murine genetic target for Myc regulation, called EC439, was isolated. To further characterize the ECA39 gene, we set out to determine the evolutionary conservation of its regulatory and coding sequences. We describe the human, nematode, and budding yeast homologs of the mouse ECA39 gene. Identities between the mouse ECA39 protein and the human, nematode, or yeast proteins are 79%, 52%, and 49%, respectively. Interestingly, the recognition site for Myc binding, located 3' to the start site of transcription in the mouse gene, is also conserved in the human homolog. This regulatory element is missing in the ECA39 homologs from nematode or yeast, which also lack the regulator c-myc. To understand the function of ECA39, we deleted the gene from the yeast genome. Disruption of ECA39 which is a recessive mutation that leads to a marked alteration in the cell cycle. Mutant haploids and homozygous diploids have a faster growth rate than isogenic wild-type strains. Fluorescence-activated cell sorter analyses indicate that the mutation shortens the G1 stage in the cell cycle. Moreover, mutant strains show higher rates of UV-induced mutations. The results suggest that the product of ECA39 is involved in the regulation of G1 to S transition. |
| Starting Page | 7143 |
| File Format | |
| ISSN | 10916490 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 14 |
| Volume Number | 93 |
| Language | English |
| Publisher Date | 1996-07-09 |
| Access Restriction | Open |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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