Putative type-1 restriction enzyme specificity protein MPN_290
Mycoplasma pneumoniae (strain ATCC 29342 / M129)
The M and S subunits together form a methyltransferase (MTase) that methylates two adenine residues in complementary strands of a bipartite DNA recognition sequence. Subunit S dictates DNA sequences specificity (By similarity).
Belongs to the type-I restriction system S methylase family.