Global map of SUMO function revealed by protein-protein interaction and genetic networks

Mol Cell. 2009 Jan 16;33(1):124-35. doi: 10.1016/j.molcel.2008.12.025.


Systematic functional genomics approaches were used to map a network centered on the small ubiquitin-related modifier (SUMO) system. Over 250 physical interactions were identified using the SUMO protein as bait in affinity purification-mass spectrometry and yeast two-hybrid screens. More than 500 genes and 1400 synthetic genetic interactions were mapped by synthetic genetic array (SGA) analysis using eight different SUMO pathway query genes. The resultant global SUMO network highlights its role in 15 major biological processes and better defines functional relationships between the different components of the SUMO pathway. Using this information-rich resource, we have identified roles for the SUMO system in the function of the AAA ATPase Cdc48p, the regulation of lipid metabolism, localization of the ATP-dependent endonuclease Dna2p, and recovery from the DNA-damage checkpoint.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Nucleus
  • Chromatography, Affinity
  • DNA Damage
  • DNA Repair
  • DNA Replication
  • Gene Regulatory Networks*
  • Genes, Fungal
  • Lipid Metabolism
  • Mass Spectrometry
  • Protein Binding
  • Protein Interaction Mapping / methods*
  • Saccharomyces cerevisiae / genetics*
  • Saccharomyces cerevisiae / metabolism*
  • Saccharomyces cerevisiae Proteins / chemistry
  • Saccharomyces cerevisiae Proteins / metabolism
  • Small Ubiquitin-Related Modifier Proteins / metabolism*
  • Two-Hybrid System Techniques
  • Ubiquitin / metabolism


  • Saccharomyces cerevisiae Proteins
  • Small Ubiquitin-Related Modifier Proteins
  • Ubiquitin