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- W2168454611 abstract "The molecular scaffold kinase suppressor of Ras 1 (KSR1) regulates the activation of the Raf/MEK/extracellular signal-regulated kinase (ERK) signal transduction pathway. KSR1 disruption in mouse embryo fibroblasts (MEFs) abrogates growth factor-induced ERK activation, H-RasV12-induced replicative senescence, and H-RasV12-induced transformation. Caveolin-1 has been primarily described as a major component of the coating structure of caveolae, which can serve as a lipid binding adaptor protein and coordinates the assembly of Ras, Raf, MEK, and ERK. In this study, we show that KSR1 interacts with caveolin-1 and is responsible for MEK and ERK redistribution to caveolin-1-rich fractions. The interaction between KSR1 and caveolin-1 is essential for optimal activation of ERK as a KSR1 mutant unable to interact with caveolin-1 does not efficiently mediate growth factor-induced ERK activation at the early stages of pathway activation. Furthermore, abolishing the KSR1–caveolin-1 interaction increases growth factor demands to promote H-RasV12-induced proliferation and has adverse effects on H-RasV12-induced cellular senescence and transformation. These data show that caveolin-1 is necessary for optimal KSR1-dependent ERK activation by growth factors and oncogenic Ras." @default.
- W2168454611 created "2016-06-24" @default.
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- W2168454611 date "2014-09-01" @default.
- W2168454611 modified "2023-10-15" @default.
- W2168454611 title "Caveolin-1 Is Required for Kinase Suppressor of Ras 1 (KSR1)-Mediated Extracellular Signal-Regulated Kinase 1/2 Activation, H-Ras<sup>V12</sup>-Induced Senescence, and Transformation" @default.
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- W2168454611 doi "https://doi.org/10.1128/mcb.01633-13" @default.
- W2168454611 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4135613" @default.
- W2168454611 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25002533" @default.
- W2168454611 hasPublicationYear "2014" @default.
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