Maturation/M-phase promoting factor (MPF) activity is regulated by the Cyclin B concentration and phosphorylation states of Cdc2 kinase. In the present review, we summarize the factors regulating the synthesis and degradation of Cyclin B and the phosphorylation and dephosphorylation of Cdc2. We focuse on Aurora A and cytoplasmic polyadenylation element binding protein (CPEB), which are involved in cytoplasmic polyadenylation, for Cyclin B synthesis; on anaphase-promoting complex (APC) activating factors, FZR1 and CDC20, for Cyclin B degradation; on Cdk7 and Wee1B for Cdc2 phosphorylation, and on Cdc25 for Cdc2 dephosphorylation. We describe our recent results concerning these factors in porcine oocytes, and discusse overall regulation of MPF activity during porcine oocyte maturation.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 27 • No. 1