using a three-step procedure designed to minimize the risks of proteolysis , high molecular weight complexes containing the same seven aminoacyl-trna synthetases specific for isoleucine , leucine , methionine , lysine , arginine , glutamic acid , and glutamine were purified from sheep liver and spleen , as well as from rabbit reticulocytes and liver .
C0061472
glutamic acid
C0017797
glutamine