摘要: The biological function of methylated bases in DNA prokaryotes appears to be quite different than that eukaryotes. In this chapter, most the information presented is derived from studies with Escherichia coli K-12 simply because more known about methylation organism any other one. Some data certain E. bacteriophages also will reviewed, addition selected aspects prokaryotes. Other recent reviews complement one are by Razin and Friedman (1981) Hattman (1981).