sentences:  In the MutSα dimer, MSH6 interacts with the DNA for mismatch recognition while MSH2 provides the stability that MSH6 requires.MSH2 can be imported into the nucleus without dimerizing to MSH6, in this case, MSH2 is probably dimerized to MSH3 to form MutSβ.MSH2 has two interacting domains with MSH6 in the MutSα heterodimer, a DNA interacting domain, and an ATPase domain.