755 results found
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Mutational analysis to explore long-range allosteric couplings involved in a pentameric channel receptor pre-activation and activation

    Solène N Lefebvre et al.
    A pentameric channel-receptor was studied by combining allosteric mutations, electrophysiology, fluorescent reporters and normal mode analysis, to dissect the long-range allosteric couplings specifically involved in its pre-activation and activation.
    1. Immunology and Inflammation

    Structural variability and concerted motions of the T cell receptor – CD3 complex

    Prithvi R Pandey et al.
    The orientation of the TCR extracellular domain is highly variable and coupled to characteristic structural changes throughout the TCR - CD3 complex.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    An improved fluorescent noncanonical amino acid for measuring conformational distributions using time-resolved transition metal ion FRET

    William N Zagotta et al.
    Time-resolved transition metal ion fluorescence resonance energy transfer using a fluorescent, noncanonical amino acid donor and metal ion acceptor measures distances and distance distributions in proteins, allowing the equilibrium distributions among conformational states to be accurately determined.
    1. Microbiology and Infectious Disease
    2. Physics of Living Systems

    A morphological transformation in respiratory syncytial virus leads to enhanced complement deposition

    Jessica P Kuppan et al.
    Respiratory syncytial virus produces filamentous particles that change shape when the viral matrix detaches from the viral membrane, and this change in shape results in enhanced deposition of complement proteins, with potential downstream consequences.
    1. Structural Biology and Molecular Biophysics

    Structural insights into the activation of human calcium-sensing receptor

    Xiaochen Chen et al.
    The cryo-electron microscopy structures of inactive and active states of calcium-sensing receptor (CaSR) reveal the activation mechanisms of CaSR.
    1. Evolutionary Biology

    Binding affinity landscapes constrain the evolution of broadly neutralizing anti-influenza antibodies

    Angela M Phillips et al.
    CR9114, one of the most broadly neutralizing anti-influenza antibodies characterized to date, acquires affinity to divergent HA subtypes sequentially, due to higher order interactions between the nested sets of mutations required for binding each distinct subtype.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    Structure and dynamics of the chromatin remodeler ALC1 bound to a PARylated nucleosome

    Luka Bacic et al.
    Analysis of conformational heterogeneity in cryo-EM data by a recently developed deep learning method reveals the structure and dynamics of the oncogenic chromatin remodeler ALC1 bound to a poly-ADP-ribosylated nucleosome.
    1. Structural Biology and Molecular Biophysics

    N501Y mutation of spike protein in SARS-CoV-2 strengthens its binding to receptor ACE2

    Fang Tian et al.
    Spike protein of SARS-CoV-2 with mutation N501Y shows a faster association rate, slower dissociation rate, and higher binding probability and unbinding force to its human receptor protein ACE2, leading to higher transmission.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Bipartite binding and partial inhibition links DEPTOR and mTOR in a mutually antagonistic embrace

    Maren Heimhalt et al.
    The inhibitory protein DEPTOR make two widely separated interactions with mTOR that are both necessary for its unique partial mTOR inhibition, and DEPTOR is a more potent inhibitor of mutation- or RHEB-activated mTORC1 than basal mTORC1.
    1. Structural Biology and Molecular Biophysics

    Hsp40s play complementary roles in the prevention of tau amyloid formation

    Rose Irwin et al.
    Chaperones from different families and classes synergistically target different stages of tau aggregation, thus preventing pathological amyloid formation.

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