Is predicted to enable transcription coregulator activity. Is involved in negative regulation of epidermal growth factor receptor signaling pathway and negative regulation of vulval development. Located in nucleus. Is expressed in several structures, including hypodermal cell; intestine; pharynx; and vulva. Human ortholog(s) of this gene are implicated in FG syndrome and Ohdo syndrome. Is an ortholog of human MED12L (mediator complex subunit 12L).