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. 1992 Jun 25;20(12):3021–3028. doi: 10.1093/nar/20.12.3021

Hoogsteen G-G base pairing is dispensable for telomere healing in yeast.

A J Lustig 1
PMCID: PMC312432  PMID: 1620597

Abstract

The G-rich strands of most eukaryotic telomeres are capable of forming highly folded structures in vitro, mediated, in part, through Hoogsteen G-G base pairing. The ability of most telomeres to form these structures has led to the suggestion that they play an important role in telomere addition. I have investigated this possibility in the yeast Saccharomyces cerevisiae through the use of an in vivo assay that measures healing via poly(G1-3T) addition onto plasmid substrates containing synthetic telomeres. Synthetic telomere healing is a highly size- and sequence-specific process that allows the discrimination of telomeres of differing efficiency. Plasmids containing synthetic telomeres with differing abilities to form secondary structures were tested in this assay for healing in vivo. The results of this study demonstrate that telomeres incapable of forming Hoogsteen base pairs nonetheless serve as efficient substrates for poly(G1-3T) addition, indicating that intramolecular Hoogsteen G-G base pairing is not essential for this process.

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Selected References

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

  1. Blackburn E. H. Structure and function of telomeres. Nature. 1991 Apr 18;350(6319):569–573. doi: 10.1038/350569a0. [DOI] [PubMed] [Google Scholar]
  2. Cech T. R. G-strings at chromosome ends. Nature. 1988 Apr 28;332(6167):777–778. doi: 10.1038/332777a0. [DOI] [PubMed] [Google Scholar]
  3. Dunn B., Szauter P., Pardue M. L., Szostak J. W. Transfer of yeast telomeres to linear plasmids by recombination. Cell. 1984 Nov;39(1):191–201. doi: 10.1016/0092-8674(84)90205-8. [DOI] [PubMed] [Google Scholar]
  4. Greider C. W., Blackburn E. H. A telomeric sequence in the RNA of Tetrahymena telomerase required for telomere repeat synthesis. Nature. 1989 Jan 26;337(6205):331–337. doi: 10.1038/337331a0. [DOI] [PubMed] [Google Scholar]
  5. Greider C. W., Blackburn E. H. Identification of a specific telomere terminal transferase activity in Tetrahymena extracts. Cell. 1985 Dec;43(2 Pt 1):405–413. doi: 10.1016/0092-8674(85)90170-9. [DOI] [PubMed] [Google Scholar]
  6. Greider C. W., Blackburn E. H. The telomere terminal transferase of Tetrahymena is a ribonucleoprotein enzyme with two kinds of primer specificity. Cell. 1987 Dec 24;51(6):887–898. doi: 10.1016/0092-8674(87)90576-9. [DOI] [PubMed] [Google Scholar]
  7. Harrington L. A., Greider C. W. Telomerase primer specificity and chromosome healing. Nature. 1991 Oct 3;353(6343):451–454. doi: 10.1038/353451a0. [DOI] [PubMed] [Google Scholar]
  8. Henderson E. R., Blackburn E. H. An overhanging 3' terminus is a conserved feature of telomeres. Mol Cell Biol. 1989 Jan;9(1):345–348. doi: 10.1128/mcb.9.1.345. [DOI] [PMC free article] [PubMed] [Google Scholar]
  9. Henderson E. R., Moore M., Malcolm B. A. Telomere G-strand structure and function analyzed by chemical protection, base analogue substitution, and utilization by telomerase in vitro. Biochemistry. 1990 Jan 23;29(3):732–737. doi: 10.1021/bi00455a020. [DOI] [PubMed] [Google Scholar]
  10. Henderson E., Hardin C. C., Walk S. K., Tinoco I., Jr, Blackburn E. H. Telomeric DNA oligonucleotides form novel intramolecular structures containing guanine-guanine base pairs. Cell. 1987 Dec 24;51(6):899–908. doi: 10.1016/0092-8674(87)90577-0. [DOI] [PubMed] [Google Scholar]
  11. Kang C., Zhang X., Ratliff R., Moyzis R., Rich A. Crystal structure of four-stranded Oxytricha telomeric DNA. Nature. 1992 Mar 12;356(6365):126–131. doi: 10.1038/356126a0. [DOI] [PubMed] [Google Scholar]
  12. Klobutcher L. A., Swanton M. T., Donini P., Prescott D. M. All gene-sized DNA molecules in four species of hypotrichs have the same terminal sequence and an unusual 3' terminus. Proc Natl Acad Sci U S A. 1981 May;78(5):3015–3019. doi: 10.1073/pnas.78.5.3015. [DOI] [PMC free article] [PubMed] [Google Scholar]
  13. 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]
  14. Maxam A. M., Gilbert W. Sequencing end-labeled DNA with base-specific chemical cleavages. Methods Enzymol. 1980;65(1):499–560. doi: 10.1016/s0076-6879(80)65059-9. [DOI] [PubMed] [Google Scholar]
  15. Morin G. B. The human telomere terminal transferase enzyme is a ribonucleoprotein that synthesizes TTAGGG repeats. Cell. 1989 Nov 3;59(3):521–529. doi: 10.1016/0092-8674(89)90035-4. [DOI] [PubMed] [Google Scholar]
  16. Murray A. W., Claus T. E., Szostak J. W. Characterization of two telomeric DNA processing reactions in Saccharomyces cerevisiae. Mol Cell Biol. 1988 Nov;8(11):4642–4650. doi: 10.1128/mcb.8.11.4642. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Müller F., Wicky C., Spicher A., Tobler H. New telomere formation after developmentally regulated chromosomal breakage during the process of chromatin diminution in Ascaris lumbricoides. Cell. 1991 Nov 15;67(4):815–822. doi: 10.1016/0092-8674(91)90076-b. [DOI] [PubMed] [Google Scholar]
  18. Panyutin I. G., Kovalsky O. I., Budowsky E. I., Dickerson R. E., Rikhirev M. E., Lipanov A. A. G-DNA: a twice-folded DNA structure adopted by single-stranded oligo(dG) and its implications for telomeres. Proc Natl Acad Sci U S A. 1990 Feb;87(3):867–870. doi: 10.1073/pnas.87.3.867. [DOI] [PMC free article] [PubMed] [Google Scholar]
  19. Pluta A. F., Dani G. M., Spear B. B., Zakian V. A. Elaboration of telomeres in yeast: recognition and modification of termini from Oxytricha macronuclear DNA. Proc Natl Acad Sci U S A. 1984 Mar;81(5):1475–1479. doi: 10.1073/pnas.81.5.1475. [DOI] [PMC free article] [PubMed] [Google Scholar]
  20. Pluta A. F., Zakian V. A. Recombination occurs during telomere formation in yeast. Nature. 1989 Feb 2;337(6206):429–433. doi: 10.1038/337429a0. [DOI] [PubMed] [Google Scholar]
  21. Ruby S. W., Szostak J. W., Murray A. W. Cloning regulated yeast genes from a pool of lacZ fusions. Methods Enzymol. 1983;101:253–269. doi: 10.1016/0076-6879(83)01019-8. [DOI] [PubMed] [Google Scholar]
  22. Sen D., Gilbert W. A sodium-potassium switch in the formation of four-stranded G4-DNA. Nature. 1990 Mar 29;344(6265):410–414. doi: 10.1038/344410a0. [DOI] [PubMed] [Google Scholar]
  23. Shampay J., Blackburn E. H. Tetrahymena micronuclear sequences that function as telomeres in yeast. Nucleic Acids Res. 1989 Apr 25;17(8):3247–3260. doi: 10.1093/nar/17.8.3247. [DOI] [PMC free article] [PubMed] [Google Scholar]
  24. 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]
  25. Shippen-Lentz D., Blackburn E. H. Functional evidence for an RNA template in telomerase. Science. 1990 Feb 2;247(4942):546–552. doi: 10.1126/science.1689074. [DOI] [PubMed] [Google Scholar]
  26. Shippen-Lentz D., Blackburn E. H. Telomere terminal transferase activity from Euplotes crassus adds large numbers of TTTTGGGG repeats onto telomeric primers. Mol Cell Biol. 1989 Jun;9(6):2761–2764. doi: 10.1128/mcb.9.6.2761. [DOI] [PMC free article] [PubMed] [Google Scholar]
  27. Smith F. W., Feigon J. Quadruplex structure of Oxytricha telomeric DNA oligonucleotides. Nature. 1992 Mar 12;356(6365):164–168. doi: 10.1038/356164a0. [DOI] [PubMed] [Google Scholar]
  28. Sundquist W. I., Klug A. Telomeric DNA dimerizes by formation of guanine tetrads between hairpin loops. Nature. 1989 Dec 14;342(6251):825–829. doi: 10.1038/342825a0. [DOI] [PubMed] [Google Scholar]
  29. Szostak J. W., Blackburn E. H. Cloning yeast telomeres on linear plasmid vectors. Cell. 1982 May;29(1):245–255. doi: 10.1016/0092-8674(82)90109-x. [DOI] [PubMed] [Google Scholar]
  30. Teschke C., Solleder G., Moritz K. B. The highly variable pentameric repeats of the AT-rich germline limited DNA in Parascaris univalens are the telomeric repeats of somatic chromosomes. Nucleic Acids Res. 1991 May 25;19(10):2677–2684. doi: 10.1093/nar/19.10.2677. [DOI] [PMC free article] [PubMed] [Google Scholar]
  31. Walmsley R. M., Szostak J. W., Petes T. D. Is there left-handed DNA at the ends of yeast chromosomes? Nature. 1983 Mar 3;302(5903):84–86. doi: 10.1038/302084a0. [DOI] [PubMed] [Google Scholar]
  32. Wang S. S., Zakian V. A. Telomere-telomere recombination provides an express pathway for telomere acquisition. Nature. 1990 May 31;345(6274):456–458. doi: 10.1038/345456a0. [DOI] [PubMed] [Google Scholar]
  33. Williamson J. R., Raghuraman M. K., Cech T. R. Monovalent cation-induced structure of telomeric DNA: the G-quartet model. Cell. 1989 Dec 1;59(5):871–880. doi: 10.1016/0092-8674(89)90610-7. [DOI] [PubMed] [Google Scholar]
  34. Yu G. L., Bradley J. D., Attardi L. D., Blackburn E. H. In vivo alteration of telomere sequences and senescence caused by mutated Tetrahymena telomerase RNAs. Nature. 1990 Mar 8;344(6262):126–132. doi: 10.1038/344126a0. [DOI] [PubMed] [Google Scholar]
  35. Zahler A. M., Prescott D. M. Telomere terminal transferase activity in the hypotrichous ciliate Oxytricha nova and a model for replication of the ends of linear DNA molecules. Nucleic Acids Res. 1988 Jul 25;16(14B):6953–6972. doi: 10.1093/nar/16.14.6953. [DOI] [PMC free article] [PubMed] [Google Scholar]
  36. Zahler A. M., Williamson J. R., Cech T. R., Prescott D. M. Inhibition of telomerase by G-quartet DNA structures. Nature. 1991 Apr 25;350(6320):718–720. doi: 10.1038/350718a0. [DOI] [PubMed] [Google Scholar]
  37. Zakian V. A. Structure and function of telomeres. Annu Rev Genet. 1989;23:579–604. doi: 10.1146/annurev.ge.23.120189.003051. [DOI] [PubMed] [Google Scholar]

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