[Early stimulation of protein kinase activity during hormonal meiosis reinitiation in starfish ovocytes].
Total endogenous protein kinase activity has been compared in homogenates prepared from Marthasterias glacialis and Asterias rubens oocytes treated or not by 1-methyladenine, the hormone which triggers meiosis reinitiation. A 5 mn treatment at the threshold 10(-7) M concentration causes a significant increase (+ 20%) of these activities. This stimulation is maintained or even enhanced when homogenates are complemented with exogenous histones.
D000225:Adenine / Q000031:analogs & derivatives* / Q000494:pharmacology; D000255:Adenosine Triphosphate / Q000378:metabolism; D000818:Animals; D002729:Chloromercuribenzoates / Q000494:pharmacology; D005033:Ethylmaleimide / Q000494:pharmacology; D005260:Female; D008540:Meiosis / Q000187:drug effects; D009865:Oocytes / Q000187:drug effects / Q000201:enzymology*; D010063:Ovum / Q000201:enzymology*; D006656:Protamine Kinase / Q000378:metabolism; D011494:Protein Kinases / Q000378:metabolism*; D013215:Starfish
D002729:Chloromercuribenzoates; D000255:Adenosine Triphosphate; D011494:Protein Kinases; D006656:Protamine Kinase; D000225:Adenine; D005033:Ethylmaleimide
Stimulation précoce des activités protéines kinases au cours du processus hormonal de réinitiation de la méiose dans les ovocytes d'Etoiles de mer