SUMO activating enzyme complex / ubiquitin activating enzyme activity / SUMO is conjugated to E1 (UBA2:SAE1) / SUMO is transferred from E1 to E2 (UBE2I, UBC9) / positive regulation of protein sumoylation / small protein activating enzyme binding / ATP-dependent protein binding / positive regulation of protein targeting to mitochondrion / protein sumoylation / enzyme activator activity ...SUMO activating enzyme complex / ubiquitin activating enzyme activity / SUMO is conjugated to E1 (UBA2:SAE1) / SUMO is transferred from E1 to E2 (UBE2I, UBC9) / positive regulation of protein sumoylation / small protein activating enzyme binding / ATP-dependent protein binding / positive regulation of protein targeting to mitochondrion / protein sumoylation / enzyme activator activity / protein heterodimerization activity / nucleoplasm / nucleus / cytoplasm Similarity search - Function