4,264 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Complementary biosensors reveal different G-protein signaling modes triggered by GPCRs and non-receptor activators

    Mikel Garcia-Marcos
    Heterotrimeric G-proteins can be switched on not only by G-protein-coupled receptors but also by cytoplasmic proteins, resulting in different signaling mechanisms in cells depending on the specific type of activator.
    1. Cancer Biology

    Activation of G protein-coupled estrogen receptor signaling inhibits melanoma and improves response to immune checkpoint blockade

    Christopher A Natale et al.
    Driving melanoma differentiation through G protein-coupled estrogen receptor signaling decreases proliferative capacity, decreases expression of the oncodriver and stem cell marker c-Myc, and increases the effectiveness of immunotherapy.
    1. Cell Biology
    2. Neuroscience

    Stable G protein-effector complexes in striatal neurons: mechanism of assembly and role in neurotransmitter signaling

    Keqiang Xie et al.
    A G protein in striatal neurons forms preassembled complexes with its downstream enzyme, adenylyl cyclase, which has implications for the pathophysiology of movement disorders.
    1. Biochemistry and Chemical Biology
    2. Developmental Biology

    Cholesterol activates the G-protein coupled receptor Smoothened to promote Hedgehog signaling

    Giovanni Luchetti et al.
    Cholesterol regulates cell-cell communication by activating the Hedgehog pathway, a central signaling system in development, regeneration and cancer.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Daple is a novel non-receptor GEF required for trimeric G protein activation in Wnt signaling

    Nicolas Aznar et al.
    Daple is a guanine nucleotide-exchange factor (GEF) for trimeric G proteins that enables Wnt/Frizzled receptors to transactivate G proteins during non-canonical Wnt signaling.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Quantitative analysis of mammalian GIRK2 channel regulation by G proteins, the signaling lipid PIP2 and Na+ in a reconstituted system

    Weiwei Wang et al.
    The G protein subunits Gβγ and the signaling lipid PIP2 are simultaneously needed to activate the potassium ion channel GIRK2 to control the voltage across a lipid bilayer, while sodium ions modulate these molecules' effects.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cryo-EM structure of the rhodopsin-Gαi-βγ complex reveals binding of the rhodopsin C-terminal tail to the gβ subunit

    Ching-Ju Tsai et al.
    The structure of a light-sensitive G protein-coupled receptor in complex with a Gi-protein heterotrimer provides a structural foundation for the role of the receptor C-terminal tail in scaffolding and signaling.
    1. Cell Biology

    Regulator of G protein signaling 12 enhances osteoclastogenesis by suppressing Nrf2-dependent antioxidant proteins to promote the generation of reactive oxygen species

    Andrew Ying Hui Ng et al.
    Rgs12 protein is a novel regulator of the Nrf2 protein by facilitating the proteasomal degradation of the transcription factor during osteoclast differentiation.
    1. Cell Biology
    2. Plant Biology

    Arabidopsis heterotrimeric G proteins regulate immunity by directly coupling to the FLS2 receptor

    Xiangxiu Liang et al.
    Heterotrimeric G proteins are coupled to and regulate plant receptor signaling, which allows optimum immune activation and enhances the production of reactive oxygen species.
    1. Cell Biology

    G-protein-coupled receptor signaling and polarized actin dynamics drive cell-in-cell invasion

    Vladimir Purvanov et al.
    siRNA knockdown experiments reveal in detail the signaling pathway that controls cytoskeletal function during cell-in-cell invasion.

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