Enables DNA-binding transcription activator activity, RNA polymerase II-specific and sequence-specific DNA binding activity. Involved in positive regulation of apoptotic process and positive regulation of transcription by RNA polymerase II. Located in nucleus. Is expressed in several structures, including central nervous system; gonad; intestine; liver; and lung. Orthologous to human CSRNP3 (cysteine and serine rich nuclear protein 3). [provided by Alliance of Genome Resources, Apr 2022]