DNA methylase Hha1PDB ID: 1MHT
Hha1 adds methyl groups to DNA in bacterial cells, as part of the restriction/modification system that protects the cell from viruses.
Discussed Structures from DNA Methyltransferases
HhaI methyltransferase flips its target base out of the DNA helix.
Klimasauskas, S., Kumar, S., Roberts, R.J., Cheng, X.
Journal: (1994) Cell(Cambridge,Mass.) 76: 357-369