SUMO: of branched proteins and nuclear bodies.
SUMO belongs to a growing number of ubiquitin-like proteins that covalently modify their target proteins. Although some evidence supports a role of SUMO modification in regulating protein stability, most studied examples support a model by which SUMO alters the interaction properties of its targets, often affecting their subcellular localization behavior. Examination of the PML nuclear bodies, whose principal components are SUMO-modified, has revealed this modification to be essential for their structural and functional integrity. This and other examples thus support the view that SUMO regulates the stability not of individual proteins, but rather that of entire multiprotein complexes.
Seeler
J S
JS
Unité de Recombinaison et Expression Génétique, INSERM U 163, Institut Pasteur, 28 rue du Dr. Roux, 75724 Paris Cedex 15, France.
Dejean
A
A
D000818:Animals; D034961:Antigens, Nuclear; D001324:Autoantigens / Q000378:metabolism; D022003:Cell Nucleus Structures / Q000378:metabolism*; D004266:DNA Virus Infections / Q000378:metabolism; D006801:Humans; D046911:Macromolecular Substances; D009363:Neoplasm Proteins / Q000378:metabolism; D009687:Nuclear Proteins / Q000378:metabolism; D015388:Organelles / Q000378:metabolism; D000071156:Promyelocytic Leukemia Protein; D011485:Protein Binding; D011499:Protein Processing, Post-Translational / Q000502:physiology; D025842:SUMO-1 Protein / Q000378:metabolism*; D014157:Transcription Factors / Q000378:metabolism; D025521:Tumor Suppressor Proteins
D034961:Antigens, Nuclear; D001324:Autoantigens; D046911:Macromolecular Substances; D009363:Neoplasm Proteins; D009687:Nuclear Proteins; D000071156:Promyelocytic Leukemia Protein; D025842:SUMO-1 Protein; D014157:Transcription Factors; D025521:Tumor Suppressor Proteins; C066642:SP100 protein, human; C070576:PML protein, human