Search results for " Class 7"

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A novel regulatory mechanism of MAP kinases activation and nuclear translocation mediated by PKA and the PTP-SL tyrosine phosphatase

1999

Protein tyrosine phosphatase PTP-SL retains mitogen-activated protein (MAP) kinases in the cytoplasm in an inactive form by association through a kinase interaction motif (KIM) and tyrosine dephosphorylation. The related tyrosine phosphatases PTP-SL and STEP were phosphorylated by the cAMP-dependent protein kinase A (PKA). The PKA phosphorylation site on PTP-SL was identified as the Ser231 residue, located within the KIM. Upon phosphorylation of Ser231, PTP-SL binding and tyrosine dephosphorylation of the MAP kinases extracellular signal–regulated kinase (ERK)1/2 and p38α were impaired. Furthermore, treatment of COS-7 cells with PKA activators, or overexpression of the Cα catalytic subunit …

Cytoplasmanimal structuresRecombinant Fusion ProteinsCèl·lulesAmino Acid MotifsNerve Tissue ProteinsProtein tyrosine phosphataseSH2 domainTransfectionenvironment and public healthModels Biologicalp38 Mitogen-Activated Protein KinasesReceptor tyrosine kinaseSH3 domainCell LinePhosphoserinetyrosine phosphatasesAnimalsHumansProtein phosphorylationPKAReceptor-Like Protein Tyrosine Phosphatases Class 7PhosphorylationPTP-SLCell NucleusMitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3biologyBrief ReportIntracellular Signaling Peptides and ProteinsBiological TransportCell BiologyProtein Tyrosine Phosphatases Non-ReceptorCyclic AMP-Dependent Protein KinasesEnzyme Activationenzymes and coenzymes (carbohydrates)MAP kinasesBiochemistryMitogen-activated protein kinaseCOS CellsMutationbiology.proteinPhosphorylationMitogen-Activated Protein KinasesProtein Tyrosine PhosphatasesEnzimssignal transductionProto-oncogene tyrosine-protein kinase Src
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