It takes a PHD to SUMO.

Journal: 
Trends Biochem Sci
Publication Year: 
2008
Authors: 
Jamy Peng
Joanna Wysocka
PubMed link: 
18406149
Public Summary: 
PHD fingers and bromodomains are found in close proximity to each other in many chromatin-associated proteins and can functionally synergize. Recently, it has been demonstrated that the PHD finger of the KAP1 co-repressor functions as an E3 SUMO ligase for the adjacent bromodomain. This PHD-mediated SUMOylation stabilizes the association of the bromodomain with the chromatin modifiers SETDB1 and the nucleosome remodeling and deacetylation (NuRD) complex, thereby promoting establishment of the silent gene expression state.
Scientific Abstract: 
PHD fingers and bromodomains are found in close proximity to each other in many chromatin-associated proteins and can functionally synergize. Recently, it has been demonstrated that the PHD finger of the KAP1 co-repressor functions as an E3 SUMO ligase for the adjacent bromodomain. This PHD-mediated SUMOylation stabilizes the association of the bromodomain with the chromatin modifiers SETDB1 and the nucleosome remodeling and deacetylation (NuRD) complex, thereby promoting establishment of the silent gene expression state.