Figure 4.
Deubiquitination of histones H2A and H2B regulate chromatin structure and activity. Panel A details the dynamic ubiquitination/deubiquitination of H2B in yeast. These DUBs are localized to sites of action by interaction with other chromatin bound proteins that act as scaffolds and activate the DUB activity. Panel B shows the ubiquitination/deubiquitination of H2A in higher eukaryotes. A putative binding partner for UBP16 with a role in chromatin condensation is shown with question marks.