Enables chromatin binding activity. Involved in negative regulation of transcription, DNA-templated; nucleosome disassembly; and spermatid development. Located in nucleus. Part of SWI/SNF complex. Human ortholog(s) of this gene implicated in Coffin-Siris syndrome 4; hepatocellular carcinoma; lung non-small cell carcinoma; and rhabdoid cancer. Orthologous to human SMARCA4 (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a, member 4). [provided by Alliance of Genome Resources, Apr 2022]