Part of a NuRD (Nucleosome Remodeling and Deacetylase) complex which is implicated in the synMuv B pathway that negatively regulates specification of vulval cell fate (PubMed:11076750, PubMed:21060680). This negative regulation is thought to be mediated via interaction with the promoter of lin-39, a key regulator in vulva development, and is dependent on the presence lin-1 (PubMed:17466968). Contributes to negative regulation of lag-2 which is expressed in the gut during larval development (PubMed:21060680). Has a broad role in development (PubMed:21060680). In association with akir-1, plays a role in regulating the transcription of antimicrobial peptide genes in response to fungal infection (PubMed:30036395). Component of the MEC (MEP-1-containing complex) complex that contains let-418, mep-1 and hda-1 (PubMed:21060680). Component of a NURD complex that contains let-418, hda-1, lin-40 and lin-53 (PubMed:21060680). Interacts with lin-1 (PubMed:17466968). Interacts with pie-1 (PubMed:12507426). Interacts with akir-1 (PubMed:30036395). Expressed in embryos and larva. Expressed in all interphase nuclei throughout development. Larval arrest, protruding vulva, sterile progeny.