📄 Coronavirus JHM: A virion-associated protein kinase

Coronavirus JHM contains six major proteins, one of which, the 60.000 mol.wt. nucleocapsid protein pp60, is phosphorylated. In JHM-infected cells ip 60K, the intracellular precursor to pp60 is also phosphorylated. Associated with purified JHM virions is a protein kinase which will phosphorylate pp60 and a variety of exogenous substrates in vitro. The enzyme has the characteristics of a cyclic nucleotideindependent protein kinase. Both the in vivo reaction and the enzyme activity in vitro transferred the γ-phosphate of ATP to serine residues on the nucleocapsid protein.

keywords 🔗 nucleocapsid protein (162) 🔗 infected cells (307)

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