Aminoacyl tRNA synthase complex-interacting multifunctional protein 2 (AIMP2)

Required for assembly and stability of the aminoacyl- tRNA synthase complex (PubMed:19131329). Mediates ubiquitination and degradation of FUBP1, a transcriptional activator of MYC, resulting in MYC down-regulation which is required for aveolar type II cell differentiation.

Blocks MDM2-mediated ubiquitination and degradation of p53/TP53. Functions as a proapoptotic factor.