Predicted to enable chromatin binding activity. Acts upstream of or within homologous chromosome pairing at meiosis and protein localization to chromosome. Located in lateral element; male germ cell nucleus; and transverse filament. Part of nuclear meiotic cohesin complex. Is expressed in bone marrow; brain; and genitourinary system. Human ortholog(s) of this gene implicated in primary ovarian insufficiency 8. Orthologous to human STAG3 (stromal antigen 3). [provided by Alliance of Genome Resources, Apr 2022]