Related Experiment Video

Updated: Apr 21, 2026

Characterize Disease-related Mutants of RAF Family Kinases by Using a Set of Practical and Feasible Methods
07:49

Characterize Disease-related Mutants of RAF Family Kinases by Using a Set of Practical and Feasible Methods

Published on: July 17, 2019

5.7K

BRAF has a kinase-independent role in MAPK signaling

    Cancer Discovery
    |November 5, 2014
    PubMed

    Insights

    The BRAF protein regulates the MAPK pathway, a crucial cellular signaling process. This regulation is dependent on BRAF’s direct interaction with MEK1.

    Area of Science:

    • Biochemistry
    • Molecular Biology
    • Cell Signaling

    Background:

    • The Mitogen-Activated Protein Kinase (MAPK) pathway is a critical signaling cascade involved in cell proliferation, differentiation, and survival.
    • BRAF is a key serine/threonine-protein kinase within the MAPK pathway, often implicated in cancer development.
    • Understanding the regulatory mechanisms of BRAF is essential for targeted therapeutic strategies.

    Purpose of the Study:

    • To elucidate the regulatory role of BRAF in the MAPK pathway.
    • To investigate the specific interaction between BRAF and MEK1 and its functional significance.

    Main Methods:

    • Biochemical assays to study protein-protein interactions.
    • Kinase activity assays.
    • Cell-based signaling pathway analysis.

    Main Results:

    • Demonstrated that BRAF directly interacts with MEK1.
    • Confirmed that this interaction is essential for BRAF's regulatory function in the MAPK pathway.
    • Characterized the impact of the BRAF-MEK1 interaction on downstream signaling events.

    Conclusions:

    • The interaction between BRAF and MEK1 is a critical determinant of MAPK pathway regulation.
    • Targeting this specific interaction could offer a novel therapeutic approach for diseases driven by MAPK pathway dysregulation.

    More Related Videos

    Author Spotlight: Integrating BRET-Based Assays and Rare Mutation Analysis to Decipher RAF Kinase Regulation in Live Cells06:44

    Author Spotlight: Integrating BRET-Based Assays and Rare Mutation Analysis to Decipher RAF Kinase Regulation in Live Cells

    Published on: March 1, 2024

    1.8K
    Intracellular Phosphoflow Cytometry of Acute Myeloid Leukemia Patient-Derived Xenotransplants07:38

    Intracellular Phosphoflow Cytometry of Acute Myeloid Leukemia Patient-Derived Xenotransplants

    Published on: June 6, 2025

    940

    Related Concept Videos

    MAPK Signaling Cascades01:07

    MAPK Signaling Cascades

    Mitogen-activated protein kinase, or MAPK pathway, activates three sequential kinases to regulate cellular responses such as proliferation, differentiation, survival, and apoptosis. The canonical MAPK pathway starts with a mitogen or growth factor binding to an RTK. The activated RTKs stimulate Ras, which recruits Raf or MAP3 Kinase (MAPKKK), the first kinase of the MAPK signaling cascade. Raf further phosphorylates and activates MEK or MAP2 Kinases (MAPKK), which in turn phosphorylates MAP...
    7.2K
    Interactions Between Signaling Pathways01:19

    Interactions Between Signaling Pathways

    Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
    Convergence and divergence, and cross-talk between signaling pathways
    Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...
    4.6K
    PI3K/mTOR/AKT Signaling Pathway01:22

    PI3K/mTOR/AKT Signaling Pathway

    The mammalian target of rapamycin  (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1  (mTORC1) and mTOR complex 2  (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast,  mTORC2 consists of a...
    5.1K
    cAMP-dependent Protein Kinase Pathways01:25

    cAMP-dependent Protein Kinase Pathways

    Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
    7.2K
    mTOR Signaling and Cancer Progression03:03

    mTOR Signaling and Cancer Progression

    The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
    The mTOR pathway or the...
    3.6K
    mTOR Signaling and Cancer Progression03:03

    mTOR Signaling and Cancer Progression

    1.4K