2,164 results found
    1. Structural Biology and Molecular Biophysics

    Transcription initiation at a consensus bacterial promoter proceeds via a ‘bind-unwind-load-and-lock’ mechanism

    Abhishek Mazumder et al.
    Single-molecule fluorescence experiments reveal transcription initiation proceeds via a 'bind-unwind-load-and-lock' mechanism where promoter DNA unwinds outside the RNA polymerase (RNAP) cleft, the unwound template-DNA loads into the cleft, and RNAP 'locks' the template-DNA by closing the RNAP clamp module.
    1. Computational and Systems Biology
    2. Physics of Living Systems

    First-principles model of optimal translation factors stoichiometry

    Jean-Benoît Lalanne, Gene-Wei Li
    A parsimonious biophysical model correctly predicts the conserved expression stoichiometry of core bacterial mRNA translation factors, providing intuitive and quantitative design principles for in vivo pathway construction.
    1. Medicine

    Modulation of fracture healing by the transient accumulation of senescent cells

    Dominik Saul et al.
    Senescent cells accumulate in the fracture callus and a reduction in the number of these cells accelerates fracture healing in mice.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Conformational changes in twitchin kinase in vivo revealed by FRET imaging of freely moving C. elegans

    Daniel Porto et al.
    Quantitative FRET imaging in moving C. elegans shows that stretch-unfolding of twitchin kinase occurs in the active muscle, whereby mechanical activity titrates the signaling pathway of this cytoskeletal kinase.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Competitive binding of MatP and topoisomerase IV to the MukB hinge domain

    Gemma LM Fisher et al.
    Topoisomerase IV and the ter-binding protein MatP competitively bind the hinge domain of the Escherichia coli Structural Maintenance of Chromosomes complex, MukB, leading to spatiotemporal regulation of MukBEF-topoisomerase IV activity.
    1. Cell Biology
    2. Developmental Biology

    Par3 cooperates with Sanpodo for the assembly of Notch clusters following asymmetric division of Drosophila sensory organ precursor cells

    Elise Houssin et al.
    Baz/Par3 and Sanpdo are required for clustering and activation of Notch receptors to allow intra-lineage private communication following asymmetric division of Drosophila epithelial cells.
    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. Ecology
    2. Evolutionary Biology

    Social-like responses are inducible in asocial Mexican cavefish despite the exhibition of strong repetitive behavior

    Motoko Iwashita, Masato Yoshizawa
    A new tracking method revealed the social-like interactions in the Mexican blind cavefish, which was thought to be evolutionarily lost, and also demonstrated its mammal-like antagonistic association between the social-like interaction and repetitive behavior.

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