A transcriptional repressor complex that contains the lin-9, lin-35, lin-37, lin-52, lin-53, lin-5is involved in 4-, dpl-1 and efl-1 proteins, and is involved in cell fate specification.
Catalysis of the transfer of a ubiquitin molecule to a histone 2B at the conserved C-terminal lysine (K) residue. The last K residue is at position 119 in fission yeast, 123 in budding yeast, and 120 in mammals.