Predicted to enable transcription coactivator activity. Predicted to contribute to ubiquitin protein ligase activity. Acts upstream of or within skeletal muscle cell differentiation. Part of mediator complex. Is expressed in several structures, including early conceptus; eye; limb mesenchyme; and oocyte. Orthologous to human MED20 (mediator complex subunit 20). [provided by Alliance of Genome Resources, Apr 2022]