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Determination of the DNA conformation of the simian virus 40 (SV40) enhancer in SV40 minichromosomes

AutorMartínez-Balbás, Marian ; Casasnovas, José María; Azorín, Ferran
Fecha de publicaciónmar-1990
EditorJohn Wiley & Sons
CitaciónEuropean Journal of Biochemistry 188(2):269-273 (1990)
ResumenThe simian virus 40 (SV40) enhancer contains three 8-bp purine-pyrimidine alternating sequences which are known to adopt the left-handed Z-DNA conformation in vitro. In this paper, we have undertaken the determination of the DNA conformation adopted by these Z-motifs in the SV40 minichromosome. We have analyzed the presence of Z-DNA through the change in linkage which should accompany formation of this left-handed conformation. Our results indicate that, regardless of the precise moment of the viral lytic cycle at which minichromosomes are harvested and the condition of the transfected DNA, either relaxed or negatively supercoiled, none of the three Z motifs of the SV40 enhancer exist to a significant extent as Z-DNA in SV40 minichromosomes. The SV40 enhancer adopts predominantly a right-handed B-DNA conformation in vivo
Versión del editorhttp://dx.doi.org/10.1111/j.1432-1033.1990.tb15399.x
URIhttp://hdl.handle.net/10261/124674
DOI10.1111/j.1432-1033.1990.tb15399.x
ISSN0014-2956
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