E3 ubiquitin-protein ligase TRIM63 (TRIM63)

E3 ubiquitin ligase. Mediates the ubiquitination and subsequent proteasomal degradation of CKM, GMEB1 and HIBADH.

Regulates the proteasomal degradation of muscle proteins under amino acid starvation, where muscle protein is catabolized to present other organs with amino acids. Inhibits de novo skeletal muscle protein synthesis under amino acid starvation.