from the o6-etdguo : dguo relative values obtained for the dna of nucleosome core particles ( approximately 0.5 ) and of h1-depleted chromatin fibers ( approximately 0.6 ) , it follows that the accessibility of the o6 atom of guanine to the electrophilic ethyldiazonium ion generated from etnu in internucleosomal dna ( protein free ) is about twice that found in nucleosomal dna .
C1518457
nucleosome core particles
C0028623
nucleosomal