Restriction and modification of DNA.

Adenosine Triphosphate Binding Sites Chromosome Mapping DNA, Bacterial Endonucleases Escherichia coli/enzymology Genetic Complementation Test Genetics, Microbial Haemophilus influenzae/enzymology Methyltransferases Mutation Nucleic Acid Conformation S-Adenosylmethionine

DNA, Bacterial S-Adenosylmethionine Adenosine Triphosphate Methyltransferases Endonucleases