this study confirms that different protein kinase enzymes catalyze selectively the phosphorylation of bleached rhodopsin and soluble proteins , and it repudiates the speculation in a previous publication [ farber , d. b. , brown , b. m. , & lolley , r. n. ( 1979 ) biochemistry 18 , 370-378 ] that a single protein kinase might catalyze both phosphorylation reactions .
C0033640
protein kinase
C0031715
phosphorylation