a mechanism of activation of the atp.mg-dependent protein phosphatase ( fc.m ) has been proposed ( jurgensen , s. , shacter , e. , huang , c. y. , chock , p. b. , yang , s.-d. , vandenheede , j. r. , and merlevede , w. ( 1984 ) j. biol . chem . 259 , 5864-5870 ) in which a transient phosphorylation by the kinase fa of the modulator subunit ( m ) is the driving force for the transition of the inactive catalytic subunit ( fc ) into its active conformation .
C0031715
phosphorylation
C0031727
kinase