A study of biochemical and functional interactions of Htl1p , a putative component of the Saccharomyces cerevisiae , Rsc chromatin-remodeling complex
Gene, ISSN: 0378-1119, Vol: 395, Issue: 1, Page: 72-85
2007
- 6Citations
- 19Captures
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- Citations6
- Citation Indexes6
- CrossRef6
- Captures19
- Readers19
- 19
Article Description
HTL1, a small gene of Saccharomyces cerevisiae, encodes a 78-aminoacid peptide that influences the performance of a wide range of cellular processes [Lanzuolo, C., Ederle, S., Pollice, A., Russo, F., Storlazzi, A., Pulitzer, J.F., 2001. The HTL1 gene,YCR020W-b of Saccharomyces cerevisiae is necessary for growth at 37 °C, and for the conservation of chromosome stability and fertility. Yeast, 18, 1317–1330]. Genetic interactions and co-immunoprecipitation experiments indicate a role for Htl1 p in functions controlled by RSC, a multiprotein, ATP-dependent, chromatin-remodeling complex [Lu, Y.M., Lin, Y.R., Tsai, A., Hsao, Y.S., Li, C.C., Cheng, M.Y., 2003. Dissecting the pet18 mutation in Saccharomyces cerevisiae : HTL1 encodes a 7-kDa polypeptide that interacts with components of the RSC complex. Mol. Genet. Genomics., 269, 321–330] [Romeo, M.J., Angus-Hill, M.L., Sobering, A.K., Kamada, Y., Cairns, B.R., Levin, D.E., 2002. HTL1 encodes a novel factor that interacts with the Rsc chromatin-remodeling complex in Saccharomyces cerevisiae. Mol. Cell. Biol., 22, 8165–8174]. Htl1 p and RSC components, share the property of associating with TBP a component of general multiprotein transcription factor TFIID [Sanders, S.L., Jennings, J., Canutescu, A., Link, A.J., Weil, P.A., 2002. Proteomics of the eukaryotic transcription machinery: identification of proteins associated with components of yeast TFIID by multidimensional mass spectrometry. Mol. Cell. Biol. 22, 4723–4738]. We confirm, by integrating genetic and biochemical experiments, that Htl1 p binding to the RSC complex is direct and physiologically relevant and show that it is mediated by Rsc8p, a core component of the RSC complex. Deletion of HTL1, like depletion of RSC core subunits [Moreira, J.M., Holmberg, S., 1999. Transcriptional repression of the yeast CHA1 gene requires the chromatin-remodeling complex Rsc. Embo J., 18, 2836–2844], leads to constitutive transcription of the CHA1 locus. This transcriptional phenotype exhibits variable penetrance. Deletion of HTL1 also leads to hydroxyurea hypersensitivity at 30 °C, suggesting a defect in replication/repair. This defect leads, during cell growth, to selection of mutations at the SIR3 locus that suppress hydroxyurea sensitivity.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0378111907000807; http://dx.doi.org/10.1016/j.gene.2007.02.002; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=34247645416&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/17400406; https://linkinghub.elsevier.com/retrieve/pii/S0378111907000807; https://dx.doi.org/10.1016/j.gene.2007.02.002
Elsevier BV
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