Table 2. Circular permutation of DNA MTases.
Family |
Motif order (linear) |
Strand order (linear) |
Examples |
α | I (AdoMet)-TRD-IV (DPPY) | 1-2-TRD-3-4-5–6-7 | M.DpnII (N6mA) |
β | IV (D/SPPY)-TRD-I (AdoMet) | 3-4-5-6-7-TRD-1-2 | M.RsrI (N6mA) and M.PvuII (N4mC) |
γ | I (AdoMet)-IV (NPPY)-TRD | 1-2-3-4-5-6-7-TRD | M.TaqI (N6mA) |
5mC | I (AdoMet)-IV (PC)-TRD | 1-2-3-4-5-6-7-TRD | M.HhaI and M.HaeIII (5mC) |