Predicted to enable double-strand/single-strand DNA junction binding activity and mismatched DNA binding activity. Involved in intrinsic apoptotic signaling pathway in response to DNA damage by
p53 class mediator; maintenance of DNA repeat elements; and mismatch repair. Predicted to be located in nucleus. Predicted to be part of MutSalpha complex. Human ortholog(s) of this gene implicated in several diseases, including Lynch syndrome (multiple); carcinoma (multiple); and cervix uteri carcinoma in situ. Is an ortholog of human MSH2 (mutS homolog 2).