Synthetic multivulva class B (synMuvB) protein (PubMed:16020796, PubMed:17075059). SynMuvB proteins are required to repress the induction of vulval development by Ras signaling and probably act by forming the multiprotein DRM complex that represses transcription (PubMed:17075059). In association with the zinc finger protein ztf-11, negatively regulates the expression of non-neuronal genes during neurogenesis (PubMed:31386623). Component of the DRM complex, at least composed of lin-9, lin-35, lin-37, lin-52, lin-53, lin-54- dpl-1 and efl-1 (PubMed:17075059). Interacts with zft-11; the interaction is required to suppress the activation of non-neuronal genes in neurons (PubMed:31386623). Belongs to the lin-52 family.