Predicted to enable RNA polymerase II cis-regulatory region sequence-specific DNA binding activity and transcription coregulator activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Part of mediator complex. Is expressed in brain; cerebral cortex; and telencephalon ventricular layer. Orthologous to human MED8 (mediator complex subunit 8). [provided by Alliance of Genome Resources, Apr 2022]