COXPD12, or Glutamyl-tRNA synthetase 2, mitochondrial, is a human gene encoded by EARS2. It may also be known as: Probable glutamate--tRNA ligase, mitochondrial; Glutamyl-tRNA synthetase; Probable glutamate-tRNA ligase, mitochondrial ; GluRS; glutamate tRNA ligase 2, mitochondrial; MSE1. The encoded protein is an enzyme with an amino acid length of 523 and a mass of 58.7 kDa. Other isoforms may exist. COXPD12 is a member of the Class-I aminoacyl-tRNA synthetase family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.