Synthetic multivulva class B (synMuvB) protein. SynMuvB proteins are required to repress the induction of vulval development by Ras signaling and probably act by forming the multiprotein DRM complex that repress transcription. 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. Localizes to condensed chromosomes during the diakinesis phase of meiosis. Widely expressed. Present in most cells from the embryo through the adulthood. The CRC domain mediates DNA-binding. It contains two CXC subdomains (joined by a flexible linker) which are both required for efficient association with target DNA. Each CXC subdomain coordinates three Zn(2+) ions. Decreased protein levels of DRM complex components including lin-9 and lin-52 (PubMed:17075059). Double knockout with the programmed cell death regulator mcd-1 results in 100% lethality during the L1 stage of larval development (PubMed:17237514). RNAi-mediated knockdown in a ced-1 mutant background results in reduced somatic cell apoptosis (PubMed:27650246). Belongs to the lin-54 family.