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    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Acidic pH and divalent cation sensing by PhoQ are dispensable for systemic salmonellae virulence

    Kevin G Hicks et al.
    Receptor recognition of antimicrobial peptides is important for Salmonellae to survive inside macrophages and cause disease.
    1. Structural Biology and Molecular Biophysics

    Specific structural elements of the T-box riboswitch drive the two-step binding of the tRNA ligand

    Jiacheng Zhang et al.
    The glycine T-box riboswitch recognizes tRNAgly and senses its aminoacylation state by first interacting with the anticodon region and subsequently probing the 3' end of the ligand using both specific structural elements and conformational dynamics.
    1. Microbiology and Infectious Disease

    MreB filaments align along greatest principal membrane curvature to orient cell wall synthesis

    Saman Hussain et al.
    MreB filaments bind, orient, and move along the direction of greatest membrane curvature, thus orienting the insertion of new glycan strands around the cell circumference in a manner that may help establish and maintain rod shape.
    1. Neuroscience

    Transient acidosis while retrieving a fear-related memory enhances its lability

    Jianyang Du et al.
    Activating ASIC channels in the amygdala makes a single reminder more effective at rendering consolidated fear memories labile and susceptible to modification.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Kinetic analysis of ASIC1a delineates conformational signaling from proton-sensing domains to the channel gate

    Sabrina Vullo et al.
    Analysis of conformational changes indicates that activation of acid-sensing ion channels involves protonation of diverse extracellular sites and interaction of interdomain loops with the upper ends of transmembrane helices.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    TMEM120A contains a specific coenzyme A-binding site and might not mediate poking- or stretch-induced channel activities in cells

    Yao Rong et al.
    Electrophysiological and structural characterizations reveal that a previously proposed ion channel responsible for sensing mechanical pain is insensitive to poking or stretching stimuli for conducting ions and may serve as a coenzyme A-binding protein instead.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    An unfolded protein-induced conformational switch activates mammalian IRE1

    G Elif Karagöz et al.
    ER-stress sensing mechanism of the unfolded protein response sensor/transducer IRE1 is conserved from yeast to mammals, where in mammals, unfolded protein binding to IRE1's ER lumenal domain is coupled to its oligomerization and activation through an allosteric conformational change.
    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. Structural Biology and Molecular Biophysics

    Allosteric mechanism for KCNE1 modulation of KCNQ1 potassium channel activation

    Georg Kuenze et al.
    An integrative structural biology approach provides refined models of the KCNQ1-KCNE1 channel complex, which propose a new mechanism to explain how KCNE1 modulates KCNQ1 channel activation.
    1. Evolutionary Biology
    2. Structural Biology and Molecular Biophysics

    Structurally distributed surface sites tune allosteric regulation

    James W McCormick et al.
    Deep mutational scanning of a synthetic allosteric chimera revealed that a sparse set of mutations on the protein surface improved regulation.