Mnt is a repressor which is involved in the genetic switch between lysogenic and lytic growth in bacteriophage P22. The C-terminal domain of the protein consists of a dimer of two antiparallel coiled coils with a right handed twist, which is both stronger and has closer inter-helical separation compared with those found in left-handed coiled coils [1].

1: The tetramerization domain of the Mnt repressor consists of two right-handed coiled coils. Nooren IM, Kaptein R, Sauer RT, Boelens R; Nat Struct Biol. 1999;6:755-759. PMID:10426954