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. 1984 Dec;81(23):7284–7287. doi: 10.1073/pnas.81.23.7284

Salt-induced Z-A-Z transition sequence in the mixed ribo-deoxyribo copolymer poly(rG-dC) X poly(rG-dC).

H Y Wu, M J Behe
PMCID: PMC392130  PMID: 6594692

Abstract

The left-handed helical conformation of various polynucleotides has been seen in solution at higher salt concentration than has the right-handed helical conformation of the corresponding polymer. We report here, however, studies of conformational transitions in the mixed polymer poly-(rG-dC) X poly(rG-dC). This polynucleotide appears to exist in a Z conformation under low-salt conditions, converts to an A helix at intermediate salt, and reverts to a left-handed helix at high-salt concentration.

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Selected References

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

  1. Behe M., Felsenfeld G. Effects of methylation on a synthetic polynucleotide: the B--Z transition in poly(dG-m5dC).poly(dG-m5dC). Proc Natl Acad Sci U S A. 1981 Mar;78(3):1619–1623. doi: 10.1073/pnas.78.3.1619. [DOI] [PMC free article] [PubMed] [Google Scholar]
  2. Brahms S., Vergne J., Brahms J. G., Di Capua E., Bucher P., Koller T. Natural DNA sequences can form left-handed helices in low salt solution under conditions of topological constraint. J Mol Biol. 1982 Dec 5;162(2):473–493. doi: 10.1016/0022-2836(82)90539-3. [DOI] [PubMed] [Google Scholar]
  3. Chen C., Cohen J. S., Behe M. B to Z transition of double-stranded poly[deoxyguanylyl(3'-5')-5-methyldeoxycytidine] in solution by phosphorus-31 and carbon-13 nuclear magnetic resonance spectroscopy. Biochemistry. 1983 Apr 26;22(9):2136–2142. doi: 10.1021/bi00278a013. [DOI] [PubMed] [Google Scholar]
  4. Conner B. N., Takano T., Tanaka S., Itakura K., Dickerson R. E. The molecular structure of d(ICpCpGpG), a fragment of right-handed double helical A-DNA. Nature. 1982 Jan 28;295(5847):294–299. doi: 10.1038/295294a0. [DOI] [PubMed] [Google Scholar]
  5. Drew H. R., Dickerson R. E. Structure of a B-DNA dodecamer. III. Geometry of hydration. J Mol Biol. 1981 Sep 25;151(3):535–556. doi: 10.1016/0022-2836(81)90009-7. [DOI] [PubMed] [Google Scholar]
  6. Drew H., Takano T., Tanaka S., Itakura K., Dickerson R. E. High-salt d(CpGpCpG), a left-handed Z' DNA double helix. Nature. 1980 Aug 7;286(5773):567–573. doi: 10.1038/286567a0. [DOI] [PubMed] [Google Scholar]
  7. Manning G. S. The molecular theory of polyelectrolyte solutions with applications to the electrostatic properties of polynucleotides. Q Rev Biophys. 1978 May;11(2):179–246. doi: 10.1017/s0033583500002031. [DOI] [PubMed] [Google Scholar]
  8. Möller A., Nordheim A., Kozlowski S. A., Patel D. J., Rich A. Bromination stabilizes poly(dG-dC) in the Z-DNA form under low-salt conditions. Biochemistry. 1984 Jan 3;23(1):54–62. doi: 10.1021/bi00296a009. [DOI] [PubMed] [Google Scholar]
  9. Möller A., Nordheim A., Nichols S. R., Rich A. 7-Methylguanine in poly(dG-dC).poly(dG-dC) facilitates z-DNA formation. Proc Natl Acad Sci U S A. 1981 Aug;78(8):4777–4781. doi: 10.1073/pnas.78.8.4777. [DOI] [PMC free article] [PubMed] [Google Scholar]
  10. Patel D. J., Canuel L. L., Pohl F. M. "Alternating B-DNA" conformation for the oligo(dG-dC) duplex in high-salt solution. Proc Natl Acad Sci U S A. 1979 Jun;76(6):2508–2511. doi: 10.1073/pnas.76.6.2508. [DOI] [PMC free article] [PubMed] [Google Scholar]
  11. Patel D. J., Kozlowski S. A., Nordheim A., Rich A. Right-handed and left-handed DNA: studies of B- and Z-DNA by using proton nuclear Overhauser effect and P NMR. Proc Natl Acad Sci U S A. 1982 Mar;79(5):1413–1417. doi: 10.1073/pnas.79.5.1413. [DOI] [PMC free article] [PubMed] [Google Scholar]
  12. Pohl F. M., Jovin T. M. Salt-induced co-operative conformational change of a synthetic DNA: equilibrium and kinetic studies with poly (dG-dC). J Mol Biol. 1972 Jun 28;67(3):375–396. doi: 10.1016/0022-2836(72)90457-3. [DOI] [PubMed] [Google Scholar]
  13. Sage E., Leng M. Conformation of poly(dG-dC) . poly(dG-dC) modified by the carcinogens N-acetoxy-N-acetyl-2-aminofluorene and N-hydroxy-N-2-aminofluorene. Proc Natl Acad Sci U S A. 1980 Aug;77(8):4597–4601. doi: 10.1073/pnas.77.8.4597. [DOI] [PMC free article] [PubMed] [Google Scholar]
  14. Santella R. M., Grunberger D., Weinstein I. B., Rich A. Induction of the Z conformation in poly(dG-dC).poly(dG-dC) by binding of N-2-acetylaminofluorene to guanine residues. Proc Natl Acad Sci U S A. 1981 Mar;78(3):1451–1455. doi: 10.1073/pnas.78.3.1451. [DOI] [PMC free article] [PubMed] [Google Scholar]
  15. Thamann T. J., Lord R. C., Wang A. H., Rich A. The high salt form of poly(dG-dC).poly(dG-dC) is left-handed Z-DNA: Raman spectra of crystals and solutions. Nucleic Acids Res. 1981 Oct 24;9(20):5443–5457. doi: 10.1093/nar/9.20.5443. [DOI] [PMC free article] [PubMed] [Google Scholar]
  16. Vorlíckovă M., Kypr J., Stokrová S., Sponar J. A Z-like form of poly(dA-dC).poly(dG-dT) in solution? Nucleic Acids Res. 1982 Feb 11;10(3):1071–1080. doi: 10.1093/nar/10.3.1071. [DOI] [PMC free article] [PubMed] [Google Scholar]
  17. Wang A. H., Quigley G. J., Kolpak F. J., Crawford J. L., van Boom J. H., van der Marel G., Rich A. Molecular structure of a left-handed double helical DNA fragment at atomic resolution. Nature. 1979 Dec 13;282(5740):680–686. doi: 10.1038/282680a0. [DOI] [PubMed] [Google Scholar]
  18. Wang A. J., Quigley G. J., Kolpak F. J., van der Marel G., van Boom J. H., Rich A. Left-handed double helical DNA: variations in the backbone conformation. Science. 1981 Jan 9;211(4478):171–176. doi: 10.1126/science.7444458. [DOI] [PubMed] [Google Scholar]
  19. Zimmer C., Tymen S., Marck C., Guschlbauer W. Conformational transitions of poly(dA-dC).poly(dG-dT) induced by high salt or in ethanolic solution. Nucleic Acids Res. 1982 Feb 11;10(3):1081–1091. doi: 10.1093/nar/10.3.1081. [DOI] [PMC free article] [PubMed] [Google Scholar]

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