Abstract
Purified virions of Newcastle disease virus (NDV) were found to contain protein kinase activity which was, like other virion-associated kinases, stimulated by Mg2+ and totally independent of Ca2+ and cAMP. The kinase phosphorylated preferentially the P and NP polypeptides of NDV. Triton-KCl fractionation of the virions has shown that the protein kinase activity may be associated with glycoprotein-free subviral particles, but not with nucleocapsids containing either only NP or some L and P proteins together with NP as protein constituent.
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Hamaguchi, M., Yoshida, T. & Nagai, Y. Protein kinase associated with Newcastle disease virus. Med Microbiol Immunol 172, 223–231 (1984). https://doi.org/10.1007/BF02123717
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DOI: https://doi.org/10.1007/BF02123717