2. MAPK/ERK Pathway
  3. Ribosomal S6 Kinase (RSK)

Ribosomal S6 Kinase (RSK)

Ribosomal S6 Kinase (RSK) is a family of serine/threonine protein kinases involved in the regulation of cell viability. RSK is phosphorylated in response to mitogens by activation of one or more protein kinase cascades. Phosphorylation of S6 in vivo is catalyzed by (at least) two distinct mitogen-activated S6 kinase families distinguishable by size, the 70 kDa and 90 kDa S6 kinases. Both S6 kinases are activated by serine/threonine phosphorylation.

The p90 ribosomal s6 kinase family (1-4) is a group of highly conserved Ser/Thr kinases that act as downstream effectors of the Ras/Raf/MEK/ERK signaling pathway. They regulate diverse cellular processes, such as cell growth, cell motility, cell survival and cell proliferation. The p70 ribosomal protein S6 kinase, an important member of AGC family, is a kind of multifunctional Ser/Thr kinases, which plays an important role in mTOR signaling cascade. The p70 ribosomal protein S6 kinase is closely associated with diverse cellular processes such as protein synthesis, mRNA processing, glucose homeostasis, cell growth and apoptosis.

Ribosomal S6 Kinase (RSK) Related Products (40):

Cat. No. Product Name Effect Purity
  • HY-12493A
    LY-2584702 tosylate salt Inhibitor 98.58%
    LY-2584702 tosylate salt is a selective ATP competitive inhibitor of p70S6K with an IC50 of 4 nM. In S6K1 enzyme assay, the IC50 of LY-2584702 is 2 nM.
  • HY-19712
    LJH685 Inhibitor 99.99%
    LJH685 is a potent, ATP-competitive and selective RSK inhibitor, inhibits RSK1, 2, and 3 biochemical activities with IC50s of 6, 5, 4 nM, respectively[1].
  • HY-10510
    BI-D1870 Inhibitor
    BI-D1870 is an ATP-competitive, cell permeable and brain penetrated inhibitor of RSK isoforms, with IC50s of 31 nM/24 nM/18 nM/15 nM for RSK1/RSK2/RSK3/RSK4, respectively[1][2][3][4][5].
  • HY-15773
    PF-4708671 Inhibitor 99.85%
    PF-4708671 is a potent cell-permeable S6K1 inhibitor with a Ki of 20 nM and IC50 of 160 nM.
  • HY-N0643
    Carnosol Inhibitor 99.90%
    Carnosol is a potent Ribosomal S6 Kinase (RSK2) inhibitor that could be useful for treating gastric cancer, with an IC50 of ~5.5 μM[1]. Carnosol, a Nrf2 activator, increases the nuclear levels of Nrf2 and can promote the expression of heme oxygenase 1 (HMOX1)[2][3].
  • HY-18507
    AD57 Inhibitor 98.08%
    AD57 is an orally active multikinase inhibitor, inhibits RET, BRAF, S6K and Src, with greatly reduces mTOR activity[1].
  • HY-P3814
    S6 Kinase Substrate Peptide 32
    S6 Kinase Substrate Peptide 32 is a substrate of Ribosomal S6 Kinase (RSK). S6 Kinase Substrate Peptide 32 can be used to measure the activity of RSKs which phosphorylate ribosomal protein S6[1].
  • HY-W011109
    CKI-7 Inhibitor
    CKI-7 is a potent and ATP-competitive casein kinase 1 (CK1) inhibitor with an IC50 of 6 μM and a Ki of 8.5 μM. CKI-7 is a selective Cdc7 kinase inhibitor. CKI-7 also inhibits SGK, ribosomal S6 kinase-1 (S6K1) and mitogen- and stress-activated protein kinase-1 (MSK1). CKI-7 has a much weaker effect on casein kinase II and other protein kinases[1][2][3][4].
  • HY-132302A
    Hu7691 free base Inhibitor
    Hu7691 free base is an orally active, selective Akt inhibitor with IC50s of 4.0 nM, 97.5 nM, 28 nM for Akt1, Akt2 and Akt3, respectively. Hu7691 free base inhibits tumor growth and enables decrease of cutaneous toxicity in mice[1].
  • HY-132302
    Hu7691 Inhibitor
    Hu7691 is an orally active, selective Akt inhibitor with IC50s of 4.0 nM, 97.5 nM, 28 nM for Akt1, Akt2 and Akt3, respectively. Hu7691 inhibits tumor growth and enables decrease of cutaneous toxicity in mice[1].
  • HY-112400
    Bisindolylmaleimide V Inhibitor
    Bisindolylmaleimide V is a cell-permeable negative control for protein kinase C inhibition studies with an IC50 value over 100 µM[1]. Bisindolylmaleimide V blocks the activation of mitogen-stimulated protein kinase p70s6k/p85s6k (S6K) in vivo with an IC50 of 8 µM[2].
  • HY-52101A
    FMK Inhibitor 99.45%
    FMK is a an irreversible RSK2 kinase inhibitor, that covalently modifies the C-terminal kinase domain of RSK.
  • HY-101029A
    MBM-55S Inhibitor
    MBM-55S is a potent NIMA-related kinase 2 (Nek2) inhibitor with an IC50 of 1 nM. MBM-55S shows a 20-fold or greater selectivity in most kinases with the exception of RSK1 (IC50=5.4 nM) and DYRK1a (IC50=6.5 nM). MBM-55S effectively inhibits the proliferation of cancer cells by inducing cell cycle arrest and apoptosis. MBM-55S shows antitumor activities, and no obvious toxicity to mice[1].
  • HY-133028
    CKI-7 free base Inhibitor 99.34%
    CKI-7 free base is a potent and ATP-competitive casein kinase 1 (CK1) inhibitor with an IC50 of 6 μM and a Ki of 8.5 μM. CKI-7 free base is a selective Cdc7 kinase inhibitor. CKI-7 free base also inhibits SGK, ribosomal S6 kinase-1 (S6K1) and mitogen- and stress-activated protein kinase-1 (MSK1). CKI-7 free base has a much weaker effect on casein kinase II and other protein kinases[1][2][3][4].
  • HY-15237
    SL 0101-1 Inhibitor
    SL 0101-1 (SL0101), a kaempferol glycoside, isolated from the tropical plant F. refracta, is a cell-permeable, selective, reversible, ATP-competitive p90 Ribosomal S6 Kinase (RSK) inhibitor, with an IC50 of 89 nM[1]. SL 0101-1 (SL0101) is a selective RSK1/2 inhibitor, with a Ki of 1 μM[2].
  • HY-12493
    LY-2584702 free base Inhibitor 99.56%
    LY-2584702 free base is a selective ATP competitive inhibitor of p70S6K with an IC50 of 4 nM. In S6K1 enzyme assay, the IC50 of LY-2584702 is 2 nM.
  • HY-19713
    LJI308 Inhibitor 99.21%
    LJI308 is a potent pan-ribosomal S6 kinase (RSK) inhibitor, with IC50s of 6 nM, 4 nM, and 13 nM for RSK1, RSK2, and RSK3, respectively. LJI308 inhibits the phosphorylation of RSK (T359/S363) and YB-1 (S102) after irradiation, treatment with EGF, and in cells expressing a KRAS mutation[1][2].
  • HY-12059A
    AT7867 dihydrochloride Inhibitor 99.17%
    AT7867 dihydrochloride is a potent ATP-competitive inhibitor of Akt1/Akt2/Akt3 and p70S6K/PKA with IC50s of 32 nM/17 nM/47 nM and 85 nM/20 nM, respectively.
  • HY-18313
    S6K1-IN-1 Inhibitor
    S6K-18 is a potent and selective p70S6K1 inhibitor with an IC50 of 52 nM[1].
  • HY-N3628
    Coronarin A Inhibitor
    Coronarin A is an orally active natural compound that inhibits mTORC1 and S6K1 to increase IRS1 activity. Coronarin A shows anti-inflammatory activity and can also be used for type 2 diabetes mellitus research[1].