The modification of proteins with ubiquitin is an important cellular mechanism for targeting abnormal or short-lived proteins for degradation. Ubiquitination involves at least three classes of enzymes: ubiquitin-activating enzymes, or E1s, ubiquitin-conjugating enzymes, or E2s, and ubiquitin-protein ligases, or E3s. This gene encodes a member of the E1 ubiquitin-activating enzyme family. The encoded enzyme associates with AppBp1, an amyloid beta precursor protein binding protein, to form a heterodimer, and then the enzyme complex activates NEDD8, a ubiquitin-like protein, which regulates cell division, signaling and embryogenesis. Multiple alternatively spliced transcript variants encoding distinct isoforms have been found for this gene.
Protein Aliases: DKFZp566J164; MGC22384; NEDD8-activating enzyme E1 catalytic subunit; NEDD8-activating enzyme E1 subunit 2; NEDD8-activating enzyme E1C; Nedd8-activating enzyme hUba3; UBA3, ubiquitin-activating enzyme E1 homolog; Ubiquitin-activating enzyme 3; Ubiquitin-activating enzyme E1C; ubiquitin-activating enzyme E1C (homologous to yeast UBA3); ubiquitin-activating enzyme E1C (UBA3 homolog, yeast); ubiquitin-like modifier activating enzyme 3; Ubiquitin-like modifier-activating enzyme 3
Gene Aliases: hUBA3; NAE2; UBA3; UBE1C
UniProt ID: (Human) Q8TBC4
Entrez Gene ID: (Human) 9039