In eukaryotes, MutS homologs form two major heterodimers: Msh2/Msh6 (MutSα) and Msh2/Msh3 (MutSβ).
En eucariotas, os homólogos de MutS (chamados Msh) forman dous heterodímeros principais: Msh2/Msh6 (MutSα) e Msh2/Msh3 (MutSβ).