at low ionic strength the mass per unit length of the '10 nm nucleofilament corresponds to one nucleosome per 8 -- 12 nm and a dna packing ratio of between 6 and 9. from the contrast dependence of the cross-section radius of gyration of the nucleofilament the following parameters have been obtained ; rgdna ' the cross-section radius of gyration ( rg ) when dna dominates the scatter ;
C0000702
a dna
C0012854
dna