Predicted to enable actin binding activity. Acts upstream of or within negative regulation of smooth muscle cell differentiation and stem cell population maintenance. Located in cortical actin cytoskeleton. Part of mediator complex. Is expressed in several structures, including alimentary system; eye; male reproductive gland or organ; nervous system; and neural ectoderm. Orthologous to human MED28 (mediator complex subunit 28). [provided by Alliance of Genome Resources, Apr 2022]