Purity ~90% (SDS-PAGE). Allows the formation of correctly charged Gln-tRNA(Gln) through the transamidation of misacylated Glu-tRNA(Gln) in the mitochondria. The reaction takes place in the presence of glutamine and ATP through an activated gamma-phospho-Glu-tRNA(Gln). Source: Recombinant protein corresponding to aa1-136 from human GATC, fused to GST-Tag at N-terminal, expressed in E. coli. Molecular Weight: ~42.1kD AA