Tags: Protein.
NEDD8-activating enzyme E1 catalytic subunit is a protein that in humans is encoded by the UBA3 gene.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.