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 several processes, including negative regulation of G1/S transition of mitotic cell cycle; negative regulation of cellular senescence; and regulation of lipid kinase activity. Predicted to act upstream of or within negative regulation of gene expression and negative regulation of transcription by RNA polymerase II. Predicted to be located in nucleoplasm. Predicted to be part of transcription regulator complex. Predicted to be active in chromatin. Orthologous to human RBL1 (RB transcriptional corepressor like 1). [provided by Alliance of Genome Resources, Apr 2022]