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 .
C0012854
dna
C0043442
z-dna