Type III restriction/modification enzyme methylation subunit
This domain family is found in bacteria, and is approximately 60 amino acids in length. The family is found in association with pfam01555. There are two completely conserved residues (F and S) that may be functionally important. This family is a bacterial phage resistance protein. It functions in a type III restriction/modification enzyme complex. It is part of the methylation subunit of the complex. It binds DNA and methylates it.