Enables RNA polymerase II cis-regulatory region sequence-specific DNA binding activity and promoter-specific chromatin binding activity. Involved in positive regulation of transcription by RNA polymerase II; regulation of signal transduction; and regulation of stem cell division. Located in nucleus. Is expressed in several structures, including central nervous system; genitourinary system; incisor; sensory organ; and skin. Orthologous to human PRDM15 (PR/SET domain 15). [provided by Alliance of Genome Resources, Apr 2022]