Enables chromatin binding activity. Acts upstream of or within blastocyst formation; heart development; and placenta development. Located in kinetochore. Is expressed in brain; early conceptus; genitourinary system; and heart. Human ortholog(s) of this gene implicated in extrahepatic bile duct adenocarcinoma; lung non-small cell carcinoma; lung small cell carcinoma; and renal cell carcinoma. Orthologous to human PBRM1 (polybromo 1). [provided by Alliance of Genome Resources, Apr 2022]