Definition: An enzyme responsible for producing a species-characteristic methylation pattern on adenine residues in a specific short base sequence in the host cell DNA. The enzyme catalyzes the methylation of DNA adenine in the presence of S-adenosyl-L-methionine to form DNA containing 6-methylaminopurine and S-adenosyl-L-homocysteine. EC 2.1.1.72.
Other names Site-Specific Methyltransferases (Adenine-Specific; Modification Methylases (Adenine-Specific); DNA-Adenine Methylases; DNA Modification Methylases (Adenine-Specific); Methylases, DNA-Adenine; DNA Adenine Methylases; Site Specific Methyltransferases (Adenine Specific; Modification Methylases (Adenine Specific); DNA Modification Methylases Adenine Specific