326 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cryo-EM structure of the adenosine A2A receptor coupled to an engineered heterotrimeric G protein

    Javier García-Nafría et al.
    The adenosine A2a receptor couples to the heterotrimeric G protein Gs using both conserved contacts seen in other complexes and, in addition, novel contacts to the beta subunit of the G protein.
    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Ric-8A, a G protein chaperone with nucleotide exchange activity induces long-range secondary structure changes in Gα

    Ravi Kant et al.
    Hydrogen-Deuterium exchange experiments show that Ric-8A induces similar dynamic changes in the structure of Gα as G protein-coupled receptors, yet protects a larger surface of the nucleotide-binding Ras domain.
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    Intramolecular domain dynamics regulate synaptic MAGUK protein interactions

    Nils Rademacher et al.
    Binding of ligands to PSD-95 PDZ domains induces a conformational change within the C-terminal domain module that enables differential binding to synaptic interactors.
    1. Neuroscience

    Inhibition of Transient Receptor Potential Melastatin 3 ion channels by G-protein βγ subunits

    Doreen Badheka et al.
    Electrophysiological experiments, Ca2+ imaging, and behavioral studies in mice identify the TRPM3 ion channel as a novel target of G-protein βγ subunits.
    1. Plant Biology

    The CLAVATA receptor FASCIATED EAR2 responds to distinct CLE peptides by signaling through two downstream effectors

    Byoung Il Je et al.
    The maize CLAVATA receptor, FEA2, functions in the perception of two different ligands, and remarkably that signaling from these different inputs is differentiated by the receptor interacting with two different downstream components.
    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. Biochemistry and Chemical Biology

    Concerted conformational dynamics and water movements in the ghrelin G protein-coupled receptor

    Maxime Louet et al.
    A combination of state-of-the-art biochemical, biophysical, and computational methods revealed that water molecules play a central role in signal propagation through G protein-coupled receptors.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Structural organization of a major neuronal G protein regulator, the RGS7-Gβ5-R7BP complex

    Dipak N Patil et al.
    Atomic details on structural organization and conformational dynamics of the key regulator of neuronal signaling shed light on its allosteric regulation and role in regulating cellular pathways.
    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.

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