WebDec 17, 2010 · The protein kinase Greatwall controls cell division by phosphorylating and activating an inhibitor of protein phosphatase 2A. Initiation and maintenance of mitosis require the activation of protein kinase cyclin B–Cdc2 and the inhibition of protein phosphatase 2A (PP2A), which, respectively, phosphorylate and dephosphorylate mitotic … WebThis balance is regulated by the opposing actions of CDK1 and PP2A, as well as the Greatwall kinase/MASTL. MASTL is commonly overexpressed in cancer, which makes it a potential therapeutic anticancer target. Loss of Mastl induces multiple chromosomal errors that lead to the accumulation of micronuclei and multilobulated cells in mitosis. Our ...

(PDF) PP2A/B55 and Fcp1 Regulate Greatwall and Ensa

WebThe protein kinase Greatwall (Gwl) is required to maintain mitosis through PP2A inhibition. We describe how Gwl activation results in PP2A inhibition. We identified cyclic adenosine monophosphate–regulated phosphoprotein 19 (Arpp19) and a-Endosulfine as two substrates of Gwl that, when phosphorylated by this kinase, associate with WebApr 30, 2024 · However, human and mouse cells lacking Greatwall kinase readily enter mitosis (Burgess et al, 2010; Alvarez-Fernández et al, 2013), but fail to undergo accurate sister-chromatid segregation and cell … k8s branch

Cell cycle-dependent regulation of Greatwall kinase by protein ...

WebDec 14, 2015 · Here, they provide evidence that Fcp1 mediates dephosphorylation of CDK1 targets indirectly by dephosphorylating two CDK1 sites on Greatwall (Gwl), a kinase that through phosphorylation of endosulfine creates a potent inhibitor of PP2A/B55, the phosphatase that is responsible for dephosphorylating the majority of the CDK1 … WebJan 31, 2013 · New data have recently established that protein phosphorylation during mitosis is the result of a controlled balance between kinase and phosphatase activities … k8s buff/cache