the superhelix density of the covalently closed 29-s mitochondrial dna is sigma o = -1.5 times 10 ( -2 ) ( turns/10 base pairs ) and consequently is intermediate between the superhelix density of the 34-s dna ( sigma0 = -2.8 times 10 ( -2 ) ) and that of the closed circular 24-s dna ( sigmao appromiately 0 ) .
C0012929
mitochondrial dna
C0012925
circular