The EEF1E1 protein is an important component of a multi-subunit complex that actively regulates the ATM response to DNA damage. It coordinates tRNA ligases of various amino acids and interacts with both MARS1 and EPRS1 in a core complex with AIMP2. EEF1E1 Protein, Human (His) is the recombinant human-derived EEF1E1 protein, expressed by E. coli , with N-His labeled tag.