Predicted to enable RNA polymerase II transcription regulatory region sequence-specific DNA binding activity and promoter-specific chromatin binding activity. Predicted to be involved in cell differentiation; negative regulation of G1/S transition of mitotic cell cycle; and regulation of lipid kinase activity. Predicted to act upstream of or within negative regulation of gene expression. Located in nucleus. Part of transcription regulator complex. Is expressed in several structures, including alimentary system; brain; genitourinary system; immune system; and retina. Orthologous to human RBL2 (RB transcriptional corepressor like 2). [provided by Alliance of Genome Resources, Apr 2022]