Characterization of Phosphatidylinositol 3-Kinase-dependent Phosphorylation of the Hydrophobic Motif Site Thr389 in p70 S6 Kinase 1* [PDF]
Phosphorylation of the highly conserved hydrophobic motif site in AGC kinases is necessary for phosphotransferase activity. Phosphorylation of this motif (FLGFT389Y) in p70 S6 kinase (S6K1) is both rapamycin- and wortmannin-sensitive, suggesting a role ...
A. Romanelli, V. Dreisbach, J. Blenis
semanticscholar +6 more sources
Muscarinic receptor-mediated activation of p70 S6 kinase 1 (S6K1) in 1321N1 astrocytoma cells: permissive role of phosphoinositide 3-kinase. [PDF]
In 1321N1 astrocytoma cells, carbachol stimulation of M3 muscarinic cholinergic receptors, coupled to phospholipase C, evoked a persistent 10-20-fold activation of p70 S6 kinase (S6K1).
Xiu-wen Tang+3 more
semanticscholar +5 more sources
Inhibition of mTOR signaling by genetic removal of p70 S6 Kinase 1 leads to anxiety-like disorders [PDF]
The mechanistic target or rapamycin (mTOR) is a ubiquitously expressed kinase that acts through two complexes, mTORC1 and mTORC2, to regulate protein homeostasis as well as long lasting forms of synaptic and behavioral plasticity.
M. Koehl+4 more
semanticscholar +5 more sources
Phosphatidic Acid Regulates Systemic Inflammatory Responses by Modulating the Akt-Mammalian Target of Rapamycin-p70 S6 Kinase 1 Pathway* [PDF]
Macrophages are pivotal effector cells in the innate immune system. When microbial products bind to pathogen recognition receptors, macrophages are activated and release a broad array of mediators, such as cytokines, that orchestrate the inflammatory ...
Hyung-Kyu Lim+8 more
semanticscholar +7 more sources
Evidence That 3-Phosphoinositide-dependent Protein Kinase-1 Mediates Phosphorylation of p70 S6 Kinase in Vivoat Thr-412 as well as Thr-252* [PDF]
Protein kinase B and p70 S6 kinase are members of the cyclic AMP-dependent/cyclic GMP-dependent/protein kinase C subfamily of protein kinases and are activated by a phosphatidylinositol 3-kinase-dependent pathway when cells are stimulated with insulin or
A. Balendran+4 more
semanticscholar +6 more sources
Endothelial p70 S6 kinase 1 in regulating tumor angiogenesis. [PDF]
The p70 S6 kinase 1 (p70S6K1) exerts its function in regulating protein synthesis, cell proliferation, cell cycle progression, and cell survival in response to growth factors and other cellular signals.
Ling-Zhi Liu+3 more
semanticscholar +5 more sources
TBC1D3, a hominoid-specific gene, delays IRS-1 degradation and promotes insulin signaling by modulating p70 S6 kinase activity. [PDF]
Insulin/IGF-1 signaling plays a pivotal role in the regulation of cellular homeostasis through its control of glucose metabolism as well as due to its effects on cell proliferation.
Marisa J Wainszelbaum+6 more
doaj +7 more sources
p21-activated Kinase 1 Is Activated through the Mammalian Target of Rapamycin/p70 S6 Kinase Pathway and Regulates the Replication of Hepatitis C Virus in Human Hepatoma Cells* [PDF]
Cellular mechanisms that regulate the replication of hepatitis C virus (HCV) RNA are poorly understood. p21-activated kinase 1 (PAK1) is a serine/threonine kinase that has been suggested to participate in antiviral signaling.
H. Ishida, Kui Li, M. Yi, S. Lemon
semanticscholar +6 more sources
Characterization of p70 S6 kinase 1 in early development of mouse embryos [PDF]
AbstractThe mTOR kinase controls cell growth, proliferation, and survival through two distinct multiprotein complexes mTORC1 and mTORC2. p70 S6 Kinase 1 (S6K1) is characterized as downstream effector of mTOR. Until recently, the connection between S6K1 and mTORC1 /mTORC2 during the early development of mouse embryos has not been well elucidated.
Xiao‐yan Xu+7 more
semanticscholar +5 more sources
Molecular basis for the substrate specificity of protein kinase B; comparison with MAPKAP kinase‐1 and p70 S6 kinase [PDF]
The substrate specificity of protein kinase‐Bα (PKBα, also known as RAC kinase or Akt) was investigated using synthetic peptide substrates related to the sequence surrounding the phosphorylation site on glycogen synthase kinase‐3 (GSK3). The minimum sequence motif required for efficient phosphorylation was Arg‐Xaa‐Arg‐Yaa‐Zaa‐Ser/Thr‐Hyd, where Xaa is ...
D. Alessi+4 more
semanticscholar +7 more sources