Abstract
It is shown that anti-Z-DNA antibody binding can stabilize sequences of d(CG/GC)n and d(CA/GT)n in the Z-DNA conformation in a plasmid in the complete absence of supercoiling. This effect is quantitated by using antibody preparations of different affinities and varying concentrations. The d(CG/GC)n sequence can be stabilized under physiological conditions. This is the first demonstration that a region of Z-DNA can be stabilized by protein binding in a completely relaxed plasmid under physiological conditions. The antibody-Z-DNA complex in the relaxed plasmid is shown to be an equilibrium state and not a long-lived kinetic intermediate since specific binding of the antibody to linearized plasmids containing Z-forming sequences is observed.
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- Azorin F., Nordheim A., Rich A. Formation of Z-DNA in negatively supercoiled plasmids is sensitive to small changes in salt concentration within the physiological range. EMBO J. 1983;2(5):649–655. doi: 10.1002/j.1460-2075.1983.tb01479.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 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]
- Frederick C. A., Grable J., Melia M., Samudzi C., Jen-Jacobson L., Wang B. C., Greene P., Boyer H. W., Rosenberg J. M. Kinked DNA in crystalline complex with EcoRI endonuclease. Nature. 1984 May 24;309(5966):327–331. doi: 10.1038/309327a0. [DOI] [PubMed] [Google Scholar]
- Haniford D. B., Pulleyblank D. E. Facile transition of poly[d(TG) x d(CA)] into a left-handed helix in physiological conditions. Nature. 1983 Apr 14;302(5909):632–634. doi: 10.1038/302632a0. [DOI] [PubMed] [Google Scholar]
- Haniford D. B., Pulleyblank D. E. The in-vivo occurrence of Z DNA. J Biomol Struct Dyn. 1983 Dec;1(3):593–609. doi: 10.1080/07391102.1983.10507467. [DOI] [PubMed] [Google Scholar]
- Jovin T. M., McIntosh L. P., Arndt-Jovin D. J., Zarling D. A., Robert-Nicoud M., van de Sande J. H., Jorgenson K. F., Eckstein F. Left-handed DNA: from synthetic polymers to chromosomes. J Biomol Struct Dyn. 1983 Oct;1(1):21–57. doi: 10.1080/07391102.1983.10507425. [DOI] [PubMed] [Google Scholar]
- Kim R., Kim S. H. Direct measurement of DNA unwinding angle in specific interaction between lac operator and repressor. Cold Spring Harb Symp Quant Biol. 1983;47(Pt 1):451–454. doi: 10.1101/sqb.1983.047.01.053. [DOI] [PubMed] [Google Scholar]
- Lafer E. M., Möller A., Nordheim A., Stollar B. D., Rich A. Antibodies specific for left-handed Z-DNA. Proc Natl Acad Sci U S A. 1981 Jun;78(6):3546–3550. doi: 10.1073/pnas.78.6.3546. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lafer E. M., Möller A., Valle R. P., Nordheim A., Rich A., Stollar B. D. Antibody recognition of Z-DNA. Cold Spring Harb Symp Quant Biol. 1983;47(Pt 1):155–162. doi: 10.1101/sqb.1983.047.01.020. [DOI] [PubMed] [Google Scholar]
- Malfoy B., Leng M. Antiserum to Z-DNA. FEBS Lett. 1981 Sep 14;132(1):45–48. doi: 10.1016/0014-5793(81)80424-3. [DOI] [PubMed] [Google Scholar]
- Möller A., Gabriels J. E., Lafer E. M., Nordheim A., Rich A., Stollar B. D. Monoclonal antibodies recognize different parts of Z-DNA. J Biol Chem. 1982 Oct 25;257(20):12081–12085. [PubMed] [Google Scholar]
- Nordheim A., Lafer E. M., Peck L. J., Wang J. C., Stollar B. D., Rich A. Negatively supercoiled plasmids contain left-handed Z-DNA segments as detected by specific antibody binding. Cell. 1982 Dec;31(2 Pt 1):309–318. doi: 10.1016/0092-8674(82)90124-6. [DOI] [PubMed] [Google Scholar]
- Peck L. J., Nordheim A., Rich A., Wang J. C. Flipping of cloned d(pCpG)n.d(pCpG)n DNA sequences from right- to left-handed helical structure by salt, Co(III), or negative supercoiling. Proc Natl Acad Sci U S A. 1982 Aug;79(15):4560–4564. doi: 10.1073/pnas.79.15.4560. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Peck L. J., Wang J. C. Energetics of B-to-Z transition in DNA. Proc Natl Acad Sci U S A. 1983 Oct;80(20):6206–6210. doi: 10.1073/pnas.80.20.6206. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 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]
- Revet B., Zarling D. A., Jovin T. M., Delain E. Different Z DNA forming sequences are revealed in phi X174 RFI by high resolution darkfield immuno-electron microscopy. EMBO J. 1984 Dec 20;3(13):3353–3358. doi: 10.1002/j.1460-2075.1984.tb02303.x. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Rich A., Nordheim A., Wang A. H. The chemistry and biology of left-handed Z-DNA. Annu Rev Biochem. 1984;53:791–846. doi: 10.1146/annurev.bi.53.070184.004043. [DOI] [PubMed] [Google Scholar]
- Singleton C. K., Klysik J., Stirdivant S. M., Wells R. D. Left-handed Z-DNA is induced by supercoiling in physiological ionic conditions. Nature. 1982 Sep 23;299(5881):312–316. doi: 10.1038/299312a0. [DOI] [PubMed] [Google Scholar]
- Singleton C. K., Klysik J., Wells R. D. Conformational flexibility of junctions between contiguous B- and Z-DNAs in supercoiled plasmids. Proc Natl Acad Sci U S A. 1983 May;80(9):2447–2451. doi: 10.1073/pnas.80.9.2447. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 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]