Predicted to enable DNA-binding transcription activator activity, RNA polymerase II-specific; RNA polymerase II cis-regulatory region sequence-specific DNA binding activity; and chromatin binding activity. Predicted to be involved in negative regulation of smoothened signaling pathway involved in ventral spinal cord patterning and regulation of transcription by RNA polymerase II. Predicted to act upstream of or within central nervous system development; cilium assembly; and regulation of gene expression. Predicted to be located in nucleus. Orthologous to human RFX4 (regulatory factor X4). [provided by Alliance of Genome Resources, Apr 2022]