preliminary experiments indicate that , when the activated protein kinase and the substrate protein were reconstituted with the ( na+ +k+ ) -atpase enzyme , there appeared to be a decrease in the na+-dependent phosphorylation of the na+-atpase enzyme , while the k+-dependent dephosphorylation of the ( na+ +k+ ) -atpase was unaffected .
C0033640
protein kinase
C0031715
phosphorylation