Threonyl-tRNA synthetase 2, mitochondrial (putative) is a human gene encoded by the symbol, TARS2. It may also be known as: Threonine--tRNA ligase, mitochondrial; Threonyl-tRNA synthetase-like 1; Threonine-tRNA ligase, mitochondrial ; threonine tRNA ligase 2, mitochondrial; COXPD21; TARSL1. The encoded protein is an enzyme with an amino acid length of 718 and a mass of 81.0 kDa. Other isoforms may exist. Threonyl-tRNA synthetase 2, mitochondrial (putative) is a member of the Class-II aminoacyl-tRNA synthetase family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Frog, Chicken.