DNA-binding protein which binds to the promoters of let-60, lin-14 and lin-28, possibly to regulate genes involved in hypodermal and vulval development (PubMed:21979920). Together with miRNAs mir-84 and let-7 may direct terminal differentiation of the seam cells, exit from the molting cycle, and vulva formation (PubMed:21979920). Does not regulate the expression of mir-84 (PubMed:21979920). May promote hypodermal differentiation in association with swsn-9, a component of SWI/SNF chromatin remodeling complexes (PubMed:21979920). May interact with swsn-9; the interaction promotes hypodermal differentiation. Localizes to nuclear foci in embryos and larvae (PubMed:21979920). Localizes to DNA (PubMed:21979920). Partially co-localizes with swsn-9 in hypodermal nuclei (PubMed:21979920). Expressed in hypodermal seam cells, the somatic gonad and vulval precursor cells, body wall muscle and head neurons. Expressed from embryogenesis to adulthood (PubMed:21979920). First expressed in comma stage embryos (PubMed:21979920). Highly expressed in L4 larvae and adults (PubMed:21979920).