Enables chromatin binding activity. Acts upstream of or within stem cell population maintenance. Located in chromatin. Is expressed in genitourinary system; integumental system; limb; nervous system; and tail. Human ortholog(s) of this gene implicated in Mullegama-Klein-Martinez syndrome and holoprosencephaly. Orthologous to human STAG2 (stromal antigen 2). [provided by Alliance of Genome Resources, Apr 2022]