A protein complex containing Tho2, Hpr1, Mft1 and a novel protein, Thp2, connects transcription elongation with mitotic recombination in Saccharomyces cerevisiae Journal Article
| Authors: | Chávez, S.; Beilharz, T.; Rondón, A. G.; Erdjument-Bromage, H.; Tempst, P.; Svejstrup, J. Q.; Lithgow, T.; Aguilera, A. |
| Article Title: | A protein complex containing Tho2, Hpr1, Mft1 and a novel protein, Thp2, connects transcription elongation with mitotic recombination in Saccharomyces cerevisiae |
| Abstract: | Transcription-induced recombination has been reported in all organisms from bacteria to mammals. We have shown previously that the yeast genes HPR1 and THO2 may be keys to the understanding of transcription-associated recombination, as they both affect transcription elongation and hyper-recombination in a concerted manner. Using a yeast strain that has the wild-type THO2 gene replaced by one encoding a His6-HA-tagged version, we have isolated an oligomeric complex containing four proteins: Tho2, Hpr1, Mft1 and a novel protein that we have named Thp2. We have reciprocally identified a complex containing Hpr1, Tho2 and Mft1 using anti-Mft1 antibodies in immunoprecipitation experiments. The protein complex is mainly nuclear; therefore, Tho2 and Hpr1 are physically associated. Like hpr1Δ and tho2Δ cells, mft1Δ and thp2Δ cells show mitotic hyper-recombination and impaired transcription elongation, in particular, through the bacterial lacZ sequence. Hyper-recombination conferred by mft1Δ and thp2Δ is only observed in DNA regions under transcription conditions. We propose that this protein complex acts as a functional unit connecting transcription elongation with the incidence of mitotic recombination. |
| Keywords: | unclassified drug; gene sequence; mutation; dna-binding proteins; nonhuman; mitosis; mass spectrometry; phenotype; animals; complex formation; gene expression; transcription, genetic; transcription factors; genetic recombination; saccharomyces cerevisiae; recombination, genetic; immunoprecipitation; cellular distribution; base sequence; temperature; saccharomyces cerevisiae proteins; dna primers; sequence homology; subcellular fractions; fungal protein; polyacrylamide gel electrophoresis; macromolecular substances; transcription elongation; fungal proteins; mitotic recombination; genes, fungal; priority journal; article; hpr1; mft1; tho protein complex; tho2; thp2; transcription-associated recombination; protein hpr1; protein mft1; protein tho; protein thp2; sucrose density gradient centrifugation |
| Journal Title: | EMBO Journal |
| Volume: | 19 |
| Issue: | 21 |
| ISSN: | 0261-4189 |
| Publisher: | Wiley Blackwell |
| Date Published: | 2000-11-01 |
| Start Page: | 5824 |
| End Page: | 5834 |
| Language: | English |
| PUBMED: | 11060033 |
| PROVIDER: | scopus |
| PMCID: | PMC305808 |
| DOI: | 10.1093/emboj/19.21.5824 |
| DOI/URL: | |
| Notes: | Export Date: 18 November 2015 -- Source: Scopus |
