32P-labeled ornithine decarboxylase was isolated by immunoprecipitation from murine erythroleukemia cells incubated in a medium containing [32P]ortophosphoric acid. Analysis of immunoprecipitate by SDS-polyacrylamide gel electrophoresis and autoradiography revealed a radiolabeled band, which corresponded to the position of mouse ornithine decarboxylase, phosphorylated in vitro by casein kinase-2. A preparation of casein kinase-2 purified from nuclei of erythroleukemia cells could also phosphorylate mouse ornithine decarboxylase. © 1990.
Phosphorylation of ornithine decarboxylase in intact erythroleukemia cells.
MEGGIO, FLAVIO;PINNA, LORENZO
1990
Abstract
32P-labeled ornithine decarboxylase was isolated by immunoprecipitation from murine erythroleukemia cells incubated in a medium containing [32P]ortophosphoric acid. Analysis of immunoprecipitate by SDS-polyacrylamide gel electrophoresis and autoradiography revealed a radiolabeled band, which corresponded to the position of mouse ornithine decarboxylase, phosphorylated in vitro by casein kinase-2. A preparation of casein kinase-2 purified from nuclei of erythroleukemia cells could also phosphorylate mouse ornithine decarboxylase. © 1990.
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