a mechanism for the regulation of the 17 aminoacyl-trna synthetase activities is proposed , which suggests that the synthetase activities inhibited ( group i ) or stimulated ( group ii ) by phosphorylation with a non-cyclic amp-dependent aminoacyl-trna synthetase kinase are reactivated ( group i ) or inhibited ( group ii ) , respectively , by the action of a cyclic amp-dependent phosphatase kinase through the increased activity of phosphorylated phosphoaminoacyl-trna synthetase phosphatase .
C0031715
phosphorylation
C0031727
kinase