Type II restriction enzyme MunI recognises the palindromic sequence C/AATTG. It makes contact with the DNA via the major groove [1].

1: Crystal structure of MunI restriction endonuclease in complex with cognate DNA at 1.7 A resolution. Deibert M, Grazulis S, Janulaitis A, Siksnys V, Huber R; EMBO J. 1999;18:5805-5816. PMID:10545092

2: Sequence, structure and functional diversity of PD-(D/E)XK phosphodiesterase superfamily. Steczkiewicz K, Muszewska A, Knizewski L, Rychlewski L, Ginalski K; Nucleic Acids Res. 2012;40:7016-7045. PMID:22638584