Recombinant Human SUMO-activating enzyme subunit 1 (SAE1)

Uniprot Id

Q9UBE0

Target Species

Human

Target Name

SAE1

Target Full Name

SUMO-activating enzyme subunit 1

Target Function

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.

Target Subcellular Location

Nucleus.

Target Protein Families

Ubiquitin-activating E1 family

Target Tissue Specificity

Expression level increases during S phase and drops in G2 phase (at protein level).

Target Research Area

Cell Biology

Target Synonyms

Activator of SUMO1; AOS1; HSPC140; Sae1; SAE1_HUMAN; Sentrin/SUMO activating protein AOS1; SUA1; SUMO 1 activating enzyme E1 N subunit; SUMO 1 activating enzyme subunit 1; SUMO-activating enzyme subunit 1; Ubiquitin like protein SUMO1 activating enzyme; Ubiquitin-like 1-activating enzyme E1A; UBL E1A; UBLE1A

Target Background

Posttranslational modification of proteins by the addition of the small protein SUMO (see SUMO1; MIM 601912), or sumoylation, regulates protein structure and intracellular localization. SAE1 and UBA2 (MIM 613295) form a heterodimer that functions as a SUMO-activating enzyme for the sumoylation of proteins (Okuma et al., 1999 [PubMed 9920803]).