Overview:

SAE1 and UBA2 form a heterodimer that functions as a SUMO-activating enzyme for the sumoylation of proteins to regulate protein structures and intracellular localization (1). The SAE1/SAE2 dimer functions in SUMO1 activation in a manner analogous to the single E1 ubiquitin-activating enzymes (2). The SAE2 inactivation may be a therapeutic strategy in MYC-driven cancers (3).

Gene Aliases:

SAE1: UBLE1A; SUA1; HSPC140; AOS1; FLJ3091
UBA2: SAE2; UBLE1B; SAE2; ARX; HRIHFB2115

Genbank Number:

NM_005500
NM_005499

References:

1. Okuma, T. et.al: In vitro SUMO-1 modification requires two enzymatic steps, E1 and E2. Biochem. Biophys. Res. Commun. 254: 693-698, 1999.

2. Desterro, J. et. al: Identification of the enzyme required for activation of the small ubiquitin-like protein SUMO-1. J. Biol. Chem. 274: 10618-10624, 1999.

3. Kessler, J. D. et.al: A SUMOylation-dependent transcriptional subprogram is required for Myc-driven tumorigenesis. Science 335: 348-353, 2012.