SUMO-activating enzyme subunit 2; anthracycline-associated resistance ARX; ubiquitin-like 1-activating enzyme E1B (UBA2 SAE2 UBLE1B HRIHFB2115)
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Function
- heterodimer of SAE1 & UBA2/SAE2 acts as a E1 ligase for SUMO1, SUMO2, SUMO3, & probably SUMO4
- enzyme catalytic subunit
- mediates ATP-dependent activation of SUMO proteins followed by formation of a thioester bond between a SUMO protein & a conserved active site Cys on UBA2/SAE2
- protein modification; protein sumoylation
- heterodimer of SAE1 & UBA2/SAE2 corresponds to the two domains that are encoded on a single polypeptide chain in ubiquitin-activating enzyme E1
- interacts with UBE2I
Structure
belongs to the ubiquitin-activating E1 family
Compartment
Expression
- expression induced by c-Myc
Laboratory
Notes
- SAE2 inhibition switches a transcriptional subprogram of c-Myc from activated to repressed[2]
- AE2 inhibition produces defects in the mitotic spindles of cancerous cells triggered to divide by c-Myc activation[2]
More general terms
Additional terms
Component of
References
- ↑ UniProt http://www.uniprot.org/uniprot/Q9UBT2.html
- ↑ 2.0 2.1 2.2 Kessler JD et al. A SUMOylation-dependent transcriptional subprogram is required for Myc-driven tumorigenesis. Science 2012 Jan 20; 335:348. PMID: https://www.ncbi.nlm.nih.gov/pubmed/22157079