by analysis of restriction endonuclease digestion patterns of c. cohnii total dna and ribosomal dna , we have found that the central cpg dinucleotides in the sites for the enzymes hpa ii ( ccgg ) and hha i ( gcgc ) are extensively methylated in both total dna and ribosomal dna .
C0012854
dna
C0012933
ribosomal dna