Is an ortholog of human MSH2 (mutS homolog 2). Is predicted to contribute to four-way junction DNA binding activity\; guanine\/thymine mispair binding activity\; and single thymine insertion binding activity. Is involved in DNA metabolic process\; intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator\; and reproduction. Human ortholog(s) of this gene are implicated in Lynch syndrome 1 and Muir-Torre syndrome.