N4-methylcytosine as a minor base in bacterial DNA.

Journal of Bacteriology (Impact Factor: 2.69). 04/1987; 169(3):939-43.
Source: PubMed

ABSTRACT The DNA base composition, including the minor base content, of 26 strains of bacteria was determined. The studied bacteria are sources of widely used restriction endonucleases. Approximately 35% of the bacterial DNAs contained N4-methylcytosine, about 60% contained 5-methylcytosine, and about 90% had N6-methyladenine.

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