Predicted to enable DNA-binding transcription activator activity, RNA polymerase II-specific and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Involved in endocrine pancreas development; glucose homeostasis; and regulation of insulin secretion. Located in nucleus. Is expressed in several structures, including gut; limb; liver; male reproductive gland or organ; and sensory organ. Orthologous to human RFX6 (regulatory factor X6). [provided by Alliance of Genome Resources, Apr 2022]