FARS2 (mitochondrial phenylalanyl tRNA synthetase) catalyzes the reaction of phenylalanine, mitochondrial tRNA(Phe), and ATP to form Phe-tRNA(Phe), AMP, and pyrophosphate. The enzyme, a class II tRNA synthetase, is a monomer (Bullard et al. 1999).
phenylalanine-tRNA ligase activity of FARS2(1-?) [mitochondrial matrix]