histone H2AK119 ubiquitin ligase activity

Catalysis of the transfer of a ubiquitin molecule to histone 2A at the lysine-119 residue.

histone H2A-K119 monoubiquitination

The modification of histone H2A by addition of a single ubiquitin group to lysine-119 (H2A- K119) in metazoans, and at the equivalent residue in other organisms.

histone H2B C-terminal K residue ubiquitin ligase activity

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.

PRC1 complex

A multiprotein complex that mediates monoubiquitination of lysine residues of histone H2A (lysine-118 in Drosophila or lysine-119 in mammals). The complex is required for stable long-term maintenance of transcriptionally repressed states and is involved in chromatin remodeling.

HULC complex

A ubiquitin ligase complex that contains two RING finger proteins, which have ubiquitin ligase activity, in addition to a protein with ubiquitin-conjugating enzyme activity; catalyzes the ubiquitination of histone H2B at lysine 119 (or the equivalent residue). In Schizosaccharomyces the subunits are Rhp6, Shf1, Brl2/Rfp1 and Brl1/Rfp2.