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Mammalian glycogen synthase kinase-3 (GSK-3), a critical regulator in neuronal signaling, cognition, and behavior, exists as two isozymes GSK-3α and GSK-3β. Their distinct biological functions remains largely unknown. Here, we examined the evolutionary significance of each of these isozymes. Surprisingly, we found that unlike other vertebrates that harbor both GSK-3 genes, the GSK-3α gene is missing...
In somatic cells, translocation of PKCs is facilitated by receptor for activated C kinase (RACK); however its involvement in egg activation is still elusive. We have followed the translocation pattern of conventional and novel PKCs (cPKCs and nPKCs, respectively) upon egg activation. Confocal microscopy indicated the expression and localization of RACK1, a specific receptor protein for cPKCs. Activation...
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