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XB-ART-26711
Biosci Rep 1989 Jun 01;93:351-8.
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Involvement of protein kinase A and casein kinase II in the in vivo protein kinase activities in prophase arrested Xenopus oocytes.

Cormier P , Mulner-Lorillon O , Ozon R , Bellé R .


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In vivo beta casein phosphorylation was analysed in Xenopus full-grown oocytes arrested in the prophase of the meiotic cell division. The phosphorylation was inhibited by the protein kinase inhibitor (PKI) and also by heparin (3 micrograms/ml; final concentration). beta casein phosphorylation was increased by spermine (2 mM). Therefore, protein kinase A and casein kinase II are both active in vivo in full-grown oocytes and may be involved in the prophase arrest of meiotic cell division.

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