Abstract:Administration of T3 (20 micrograms/100 g BW) for 3 days increases phosphorylation of several proteins in rat liver cytosol in vitro. To help elucidate the mechanism of T3-induced phosphorylation, we studied which protein kinase(s) mediate phosphorylation of endogenous cytosolic proteins. Five different protein kinases were obtained by DEAE+ cellulose column chromatographic fractionation of liver cytosol. When their ability to phosphorylate heat-inactivated cytosol was investigated, casein kinase, a cAMP indep… Show more
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