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- Table of Contents

Facts about SUMO-activating enzyme subunit 2.
The heterodimer acts as an E1 ligase for SUMO1, SUMO2, SUMO3, and probably SUMO4.
It mediates ATP-dependent activation of SUMO proteins followed by formation of a thioester bond between a SUMO protein and a conserved active site cysteine residue on UBA2/SAE2..
| Human | |
|---|---|
| Gene Name: | UBA2 |
| Uniprot: | Q9UBT2 |
| Entrez: | 10054 |

| Belongs to: |
|---|
| ubiquitin-activating E1 family |

Anthracycline-associated resistance ARX; ARX; EC 6.3.2; EC 6.3.2.-; FLJ13058; HRIHFB2115; SAE2SUMO-1 activating enzyme subunit 2; SUMO1 activating enzyme subunit 2; SUMO-activating enzyme subunit 2; UBA2, ubiquitin-activating enzyme E1 homolog; Ubiquitin-like 1-activating enzyme E1B; ubiquitin-like modifier activating enzyme 2; UBLE1B
Mass (kDA):
71.224 kDA

| Human | |
|---|---|
| Location: | 19q13.11 |
| Sequence: | 19; NC_000019.10 (34428176..34471251) |
Cytoplasm. Nucleus. Shuttles between the cytoplasm and the nucleus, sumoylation is required either for nuclear translocation or nuclear retention.






PMID: 9920803 by Okuma T., et al. In vitro SUMO-1 modification requires two enzymatic steps, E1 and E2.
PMID: 10217437 by Gong L., et al. Molecular cloning and characterization of human AOS1 and UBA2, components of the sentrin-activating enzyme complex.