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. 1994 Jun;14(6):3791–3799. doi: 10.1128/mcb.14.6.3791

The yeast GAL11 protein is involved in regulation of the structure and the position effect of telomeres.

Y Suzuki 1, M Nishizawa 1
PMCID: PMC358746  PMID: 8196622

Abstract

GAL11 is an auxiliary transcription factor that functions either positively or negatively, depending on the structure of the target promoters and the combination of DNA-bound activators. In this report, we demonstrate that a gal11 delta mutation caused a decrease in the length of the telomere C1-3A tract, a derepression of URA3 when it is placed next to telomere, and an increase in accessibility of the telomeric region to dam methylase, indicating that GAL11 is involved in the regulation of the structure and the position effect of telomeres. The defective position effect in a gal11 delta strain was suppressed by overproduction of SIR3, whereas overexpression of GAL11 failed to restore the telomere position effect in a sir3 delta strain. Hyperproduced GAL11 could partially suppress the defect in silencing at HMR in a sir1 delta mutant but not that in a sir3 delta mutant, suggesting that GAL11 can replace SIR1 function partly in the silencing of HMR. Overproduced SIR3 also could restore silencing at HMR in sir1 delta cells. In contrast, SIR1 in a multicopy plasmid relieved the telomere position effect, especially in a gal11 delta mutant. Since chromatin structure is thought to play a major role in the silencing at both the HM loci and telomeres, GAL11 is likely to participate in the regional regulation of transcription by the HM loci and telomeres, GAL11 is likely to participate in the regional regulation of transcription by modulating the chromatin structure.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Aparicio O. M., Billington B. L., Gottschling D. E. Modifiers of position effect are shared between telomeric and silent mating-type loci in S. cerevisiae. Cell. 1991 Sep 20;66(6):1279–1287. doi: 10.1016/0092-8674(91)90049-5. [DOI] [PubMed] [Google Scholar]
  2. Brand A. H., Breeden L., Abraham J., Sternglanz R., Nasmyth K. Characterization of a "silencer" in yeast: a DNA sequence with properties opposite to those of a transcriptional enhancer. Cell. 1985 May;41(1):41–48. doi: 10.1016/0092-8674(85)90059-5. [DOI] [PubMed] [Google Scholar]
  3. Buchman A. R., Kimmerly W. J., Rine J., Kornberg R. D. Two DNA-binding factors recognize specific sequences at silencers, upstream activating sequences, autonomously replicating sequences, and telomeres in Saccharomyces cerevisiae. Mol Cell Biol. 1988 Jan;8(1):210–225. doi: 10.1128/mcb.8.1.210. [DOI] [PMC free article] [PubMed] [Google Scholar]
  4. Carlson M., Celenza J. L., Eng F. J. Evolution of the dispersed SUC gene family of Saccharomyces by rearrangements of chromosome telomeres. Mol Cell Biol. 1985 Nov;5(11):2894–2902. doi: 10.1128/mcb.5.11.2894. [DOI] [PMC free article] [PubMed] [Google Scholar]
  5. Casadaban M. J., Martinez-Arias A., Shapira S. K., Chou J. Beta-galactosidase gene fusions for analyzing gene expression in escherichia coli and yeast. Methods Enzymol. 1983;100:293–308. doi: 10.1016/0076-6879(83)00063-4. [DOI] [PubMed] [Google Scholar]
  6. Chen S., West R. W., Jr, Johnson S. L., Gans H., Kruger B., Ma J. TSF3, a global regulatory protein that silences transcription of yeast GAL genes, also mediates repression by alpha 2 repressor and is identical to SIN4. Mol Cell Biol. 1993 Feb;13(2):831–840. doi: 10.1128/mcb.13.2.831. [DOI] [PMC free article] [PubMed] [Google Scholar]
  7. Chien C. T., Buck S., Sternglanz R., Shore D. Targeting of SIR1 protein establishes transcriptional silencing at HM loci and telomeres in yeast. Cell. 1993 Nov 5;75(3):531–541. doi: 10.1016/0092-8674(93)90387-6. [DOI] [PubMed] [Google Scholar]
  8. Conrad M. N., Wright J. H., Wolf A. J., Zakian V. A. RAP1 protein interacts with yeast telomeres in vivo: overproduction alters telomere structure and decreases chromosome stability. Cell. 1990 Nov 16;63(4):739–750. doi: 10.1016/0092-8674(90)90140-a. [DOI] [PubMed] [Google Scholar]
  9. Fascher K. D., Schmitz J., Hörz W. Role of trans-activating proteins in the generation of active chromatin at the PHO5 promoter in S. cerevisiae. EMBO J. 1990 Aug;9(8):2523–2528. doi: 10.1002/j.1460-2075.1990.tb07432.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Fassler J. S., Winston F. The Saccharomyces cerevisiae SPT13/GAL11 gene has both positive and negative regulatory roles in transcription. Mol Cell Biol. 1989 Dec;9(12):5602–5609. doi: 10.1128/mcb.9.12.5602. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Giesman D., Best L., Tatchell K. The role of RAP1 in the regulation of the MAT alpha locus. Mol Cell Biol. 1991 Feb;11(2):1069–1079. doi: 10.1128/mcb.11.2.1069. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Goldstein A., Lampen J. O. Beta-D-fructofuranoside fructohydrolase from yeast. Methods Enzymol. 1975;42:504–511. doi: 10.1016/0076-6879(75)42159-0. [DOI] [PubMed] [Google Scholar]
  13. Gottschling D. E., Aparicio O. M., Billington B. L., Zakian V. A. Position effect at S. cerevisiae telomeres: reversible repression of Pol II transcription. Cell. 1990 Nov 16;63(4):751–762. doi: 10.1016/0092-8674(90)90141-z. [DOI] [PubMed] [Google Scholar]
  14. Gottschling D. E. Telomere-proximal DNA in Saccharomyces cerevisiae is refractory to methyltransferase activity in vivo. Proc Natl Acad Sci U S A. 1992 May 1;89(9):4062–4065. doi: 10.1073/pnas.89.9.4062. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Grunstein M. Histone function in transcription. Annu Rev Cell Biol. 1990;6:643–678. doi: 10.1146/annurev.cb.06.110190.003235. [DOI] [PubMed] [Google Scholar]
  16. Himmelfarb H. J., Pearlberg J., Last D. H., Ptashne M. GAL11P: a yeast mutation that potentiates the effect of weak GAL4-derived activators. Cell. 1990 Dec 21;63(6):1299–1309. doi: 10.1016/0092-8674(90)90425-e. [DOI] [PubMed] [Google Scholar]
  17. Hirschhorn J. N., Brown S. A., Clark C. D., Winston F. Evidence that SNF2/SWI2 and SNF5 activate transcription in yeast by altering chromatin structure. Genes Dev. 1992 Dec;6(12A):2288–2298. doi: 10.1101/gad.6.12a.2288. [DOI] [PubMed] [Google Scholar]
  18. Hoekstra M. F., Malone R. E. Expression of the Escherichia coli dam methylase in Saccharomyces cerevisiae: effect of in vivo adenine methylation on genetic recombination and mutation. Mol Cell Biol. 1985 Apr;5(4):610–618. doi: 10.1128/mcb.5.4.610. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Ivy J. M., Klar A. J., Hicks J. B. Cloning and characterization of four SIR genes of Saccharomyces cerevisiae. Mol Cell Biol. 1986 Feb;6(2):688–702. doi: 10.1128/mcb.6.2.688. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Jiang Y. W., Stillman D. J. Involvement of the SIN4 global transcriptional regulator in the chromatin structure of Saccharomyces cerevisiae. Mol Cell Biol. 1992 Oct;12(10):4503–4514. doi: 10.1128/mcb.12.10.4503. [DOI] [PMC free article] [PubMed] [Google Scholar]
  21. Johnson L. M., Kayne P. S., Kahn E. S., Grunstein M. Genetic evidence for an interaction between SIR3 and histone H4 in the repression of the silent mating loci in Saccharomyces cerevisiae. Proc Natl Acad Sci U S A. 1990 Aug;87(16):6286–6290. doi: 10.1073/pnas.87.16.6286. [DOI] [PMC free article] [PubMed] [Google Scholar]
  22. Kayne P. S., Kim U. J., Han M., Mullen J. R., Yoshizaki F., Grunstein M. Extremely conserved histone H4 N terminus is dispensable for growth but essential for repressing the silent mating loci in yeast. Cell. 1988 Oct 7;55(1):27–39. doi: 10.1016/0092-8674(88)90006-2. [DOI] [PubMed] [Google Scholar]
  23. Kurtz S., Shore D. RAP1 protein activates and silences transcription of mating-type genes in yeast. Genes Dev. 1991 Apr;5(4):616–628. doi: 10.1101/gad.5.4.616. [DOI] [PubMed] [Google Scholar]
  24. Kyrion G., Boakye K. A., Lustig A. J. C-terminal truncation of RAP1 results in the deregulation of telomere size, stability, and function in Saccharomyces cerevisiae. Mol Cell Biol. 1992 Nov;12(11):5159–5173. doi: 10.1128/mcb.12.11.5159. [DOI] [PMC free article] [PubMed] [Google Scholar]
  25. Kyrion G., Liu K., Liu C., Lustig A. J. RAP1 and telomere structure regulate telomere position effects in Saccharomyces cerevisiae. Genes Dev. 1993 Jul;7(7A):1146–1159. doi: 10.1101/gad.7.7a.1146. [DOI] [PubMed] [Google Scholar]
  26. Laurenson P., Rine J. Silencers, silencing, and heritable transcriptional states. Microbiol Rev. 1992 Dec;56(4):543–560. doi: 10.1128/mr.56.4.543-560.1992. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Laurent B. C., Carlson M. Yeast SNF2/SWI2, SNF5, and SNF6 proteins function coordinately with the gene-specific transcriptional activators GAL4 and Bicoid. Genes Dev. 1992 Sep;6(9):1707–1715. doi: 10.1101/gad.6.9.1707. [DOI] [PubMed] [Google Scholar]
  28. Lustig A. J., Kurtz S., Shore D. Involvement of the silencer and UAS binding protein RAP1 in regulation of telomere length. Science. 1990 Oct 26;250(4980):549–553. doi: 10.1126/science.2237406. [DOI] [PubMed] [Google Scholar]
  29. Marshall M., Mahoney D., Rose A., Hicks J. B., Broach J. R. Functional domains of SIR4, a gene required for position effect regulation in Saccharomyces cerevisiae. Mol Cell Biol. 1987 Dec;7(12):4441–4452. doi: 10.1128/mcb.7.12.4441. [DOI] [PMC free article] [PubMed] [Google Scholar]
  30. Mullen J. R., Kayne P. S., Moerschell R. P., Tsunasawa S., Gribskov M., Colavito-Shepanski M., Grunstein M., Sherman F., Sternglanz R. Identification and characterization of genes and mutants for an N-terminal acetyltransferase from yeast. EMBO J. 1989 Jul;8(7):2067–2075. doi: 10.1002/j.1460-2075.1989.tb03615.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
  31. Nasmyth K. A. The regulation of yeast mating-type chromatin structure by SIR: an action at a distance affecting both transcription and transposition. Cell. 1982 Sep;30(2):567–578. doi: 10.1016/0092-8674(82)90253-7. [DOI] [PubMed] [Google Scholar]
  32. Nehlin J. O., Carlberg M., Ronne H. Yeast SKO1 gene encodes a bZIP protein that binds to the CRE motif and acts as a repressor of transcription. Nucleic Acids Res. 1992 Oct 25;20(20):5271–5278. doi: 10.1093/nar/20.20.5271. [DOI] [PMC free article] [PubMed] [Google Scholar]
  33. Nishizawa M., Araki R., Teranishi Y. Identification of an upstream activating sequence and an upstream repressible sequence of the pyruvate kinase gene of the yeast Saccharomyces cerevisiae. Mol Cell Biol. 1989 Feb;9(2):442–451. doi: 10.1128/mcb.9.2.442. [DOI] [PMC free article] [PubMed] [Google Scholar]
  34. Nishizawa M., Suzuki Y., Nogi Y., Matsumoto K., Fukasawa T. Yeast Gal11 protein mediates the transcriptional activation signal of two different transacting factors, Gal4 and general regulatory factor I/repressor/activator site binding protein 1/translation upstream factor. Proc Natl Acad Sci U S A. 1990 Jul;87(14):5373–5377. doi: 10.1073/pnas.87.14.5373. [DOI] [PMC free article] [PubMed] [Google Scholar]
  35. Palladino F., Laroche T., Gilson E., Axelrod A., Pillus L., Gasser S. M. SIR3 and SIR4 proteins are required for the positioning and integrity of yeast telomeres. Cell. 1993 Nov 5;75(3):543–555. doi: 10.1016/0092-8674(93)90388-7. [DOI] [PubMed] [Google Scholar]
  36. Renauld H., Aparicio O. M., Zierath P. D., Billington B. L., Chhablani S. K., Gottschling D. E. Silent domains are assembled continuously from the telomere and are defined by promoter distance and strength, and by SIR3 dosage. Genes Dev. 1993 Jul;7(7A):1133–1145. doi: 10.1101/gad.7.7a.1133. [DOI] [PubMed] [Google Scholar]
  37. Rine J., Herskowitz I. Four genes responsible for a position effect on expression from HML and HMR in Saccharomyces cerevisiae. Genetics. 1987 May;116(1):9–22. doi: 10.1093/genetics/116.1.9. [DOI] [PMC free article] [PubMed] [Google Scholar]
  38. Rothstein R. J. One-step gene disruption in yeast. Methods Enzymol. 1983;101:202–211. doi: 10.1016/0076-6879(83)01015-0. [DOI] [PubMed] [Google Scholar]
  39. Sarokin L., Carlson M. Comparison of two yeast invertase genes: conservation of the upstream regulatory region. Nucleic Acids Res. 1985 Sep 11;13(17):6089–6103. doi: 10.1093/nar/13.17.6089. [DOI] [PMC free article] [PubMed] [Google Scholar]
  40. Sarokin L., Carlson M. Short repeated elements in the upstream regulatory region of the SUC2 gene of Saccharomyces cerevisiae. Mol Cell Biol. 1986 Jul;6(7):2324–2333. doi: 10.1128/mcb.6.7.2324. [DOI] [PMC free article] [PubMed] [Google Scholar]
  41. Shampay J., Szostak J. W., Blackburn E. H. DNA sequences of telomeres maintained in yeast. Nature. 1984 Jul 12;310(5973):154–157. doi: 10.1038/310154a0. [DOI] [PubMed] [Google Scholar]
  42. Shore D., Nasmyth K. Purification and cloning of a DNA binding protein from yeast that binds to both silencer and activator elements. Cell. 1987 Dec 4;51(5):721–732. doi: 10.1016/0092-8674(87)90095-x. [DOI] [PubMed] [Google Scholar]
  43. Singh J., Klar A. J. Active genes in budding yeast display enhanced in vivo accessibility to foreign DNA methylases: a novel in vivo probe for chromatin structure of yeast. Genes Dev. 1992 Feb;6(2):186–196. doi: 10.1101/gad.6.2.186. [DOI] [PubMed] [Google Scholar]
  44. Stone E. M., Swanson M. J., Romeo A. M., Hicks J. B., Sternglanz R. The SIR1 gene of Saccharomyces cerevisiae and its role as an extragenic suppressor of several mating-defective mutants. Mol Cell Biol. 1991 Apr;11(4):2253–2262. doi: 10.1128/mcb.11.4.2253. [DOI] [PMC free article] [PubMed] [Google Scholar]
  45. Sussel L., Shore D. Separation of transcriptional activation and silencing functions of the RAP1-encoded repressor/activator protein 1: isolation of viable mutants affecting both silencing and telomere length. Proc Natl Acad Sci U S A. 1991 Sep 1;88(17):7749–7753. doi: 10.1073/pnas.88.17.7749. [DOI] [PMC free article] [PubMed] [Google Scholar]
  46. Sussel L., Vannier D., Shore D. Epigenetic switching of transcriptional states: cis- and trans-acting factors affecting establishment of silencing at the HMR locus in Saccharomyces cerevisiae. Mol Cell Biol. 1993 Jul;13(7):3919–3928. doi: 10.1128/mcb.13.7.3919. [DOI] [PMC free article] [PubMed] [Google Scholar]
  47. Suzuki Y., Nogi Y., Abe A., Fukasawa T. GAL11 protein, an auxiliary transcription activator for genes encoding galactose-metabolizing enzymes in Saccharomyces cerevisiae. Mol Cell Biol. 1988 Nov;8(11):4991–4999. doi: 10.1128/mcb.8.11.4991. [DOI] [PMC free article] [PubMed] [Google Scholar]
  48. Vallier L. G., Carlson M. New SNF genes, GAL11 and GRR1 affect SUC2 expression in Saccharomyces cerevisiae. Genetics. 1991 Nov;129(3):675–684. doi: 10.1093/genetics/129.3.675. [DOI] [PMC free article] [PubMed] [Google Scholar]
  49. Walmsley R. W., Chan C. S., Tye B. K., Petes T. D. Unusual DNA sequences associated with the ends of yeast chromosomes. Nature. 1984 Jul 12;310(5973):157–160. doi: 10.1038/310157a0. [DOI] [PubMed] [Google Scholar]
  50. Whiteway M., Freedman R., Van Arsdell S., Szostak J. W., Thorner J. The yeast ARD1 gene product is required for repression of cryptic mating-type information at the HML locus. Mol Cell Biol. 1987 Oct;7(10):3713–3722. doi: 10.1128/mcb.7.10.3713. [DOI] [PMC free article] [PubMed] [Google Scholar]
  51. Wright J. H., Gottschling D. E., Zakian V. A. Saccharomyces telomeres assume a non-nucleosomal chromatin structure. Genes Dev. 1992 Feb;6(2):197–210. doi: 10.1101/gad.6.2.197. [DOI] [PubMed] [Google Scholar]

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