Enables chromatin binding activity. Predicted to be involved in mitotic spindle assembly and sister chromatid cohesion. Predicted to act upstream of or within cell division and chromosome segregation. Located in chromatin. Is expressed in several structures, including alimentary system; genitourinary system; integumental system; midbrain; and telencephalon. Human ortholog(s) of this gene implicated in autosomal dominant mental retardation 47. Orthologous to human STAG1 (stromal antigen 1). [provided by Alliance of Genome Resources, Apr 2022]