has subject area Animals Carrier Proteins - Histones Cellular Structures - Cell Nucleus Epigenesis, Genetic Mice Multiprotein Complexes - Polycomb Repressive Complex 1 Multiprotein Complexes - Polycomb-Group Proteins Nuclear Proteins - Histones Nuclear Proteins - Polycomb Repressive Complex 1 Nuclear Proteins - Polycomb-Group Proteins Nucleoproteins - Histones Nucleoproteins - Polycomb Repressive Complex 1 Nucleoproteins - Polycomb-Group Proteins Organelles - Cell Nucleus Transcription Factors - Polycomb Repressive Complex 1 Transcription Factors - Polycomb-Group Proteins Ubiquitin-Protein Ligases - Polycomb Repressive Complex 1