NCIt definition : Phenylalanine-tRNA ligase beta subunit (589 aa, 66 kDa) is encoded by the human FARSB
gene. This protein plays a role in attaching L-phenylalanine to the terminal adenosine
of the appropriate tRNA.;
NCIt note : The cytoplasmic phenylalanine-tRNA synthetase enzyme is a heterotetrameric complex
comprised of two phenylalanine-tRNA ligase beta subunit, which may act as regulatory
subunits, and two phenylalanine--tRNA ligase alpha subunits, which may exert the catalytic
activity of the enzyme.;