1,283 results found
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Mechanism of environmentally driven conformational changes that modulate H-NS DNA-bridging activity

    Ramon A van der Valk, Jocelyne Vreede ... Remus T Dame
    The DNA-bridging efficiency of H-NS, a genome organising and transcription regulatory protein, is modulated by changes in environmental conditions of the cell, which drive a structural rearrangement of the protein.
    1. Biochemistry and Chemical Biology
    2. Computational and Systems Biology

    Molecular basis for the adaptive evolution of environment-sensing by H-NS proteins

    Xiaochuan Zhao, Umar F Shahul Hameed ... Jianing Li
    Combining in silico and experimental approaches to identify and understand the residue changes in the H-NS protein that allowed bacteria to adapt environment-sensing to different habitats.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    Bridged filaments of histone-like nucleoid structuring protein pause RNA polymerase and aid termination in bacteria

    Matthew V Kotlajich, Daniel R Hron ... Robert Landick
    Bridged H-NS filaments inhibit transcript elongation by bacterial RNA polymerase by enhancing backtracking and increasing Rho-dependent termination at a subset of pause sites that are normally poor Rho substrates.
    1. Microbiology and Infectious Disease

    The horizontally-acquired response regulator SsrB drives a Salmonella lifestyle switch by relieving biofilm silencing

    Stuti K Desai, Ricksen S Winardhi ... Linda J Kenney
    A response regulator acquired via lateral gene transfer has rewired an ancestral genetic circuitry and regulates alternative pathogenic lifestyles.
    1. Cancer Biology
    2. Cell Biology

    TP53 exon-6 truncating mutations produce separation of function isoforms with pro-tumorigenic functions

    Nitin H Shirole, Debjani Pal ... Raffaella Sordella
    Genetic and molecular analysis of TP53 exon-6 truncating mutations reveal that these mutations, contrary to current belief, promote tumorigenesis and point towards strategies for treating cancers driven by these prevalent mutations.
    1. Computational and Systems Biology
    2. Neuroscience

    Na+/K+ pump interacts with the h-current to control bursting activity in central pattern generator neurons of leeches

    Daniel Kueh, William H Barnett ... Ronald L Calabrese
    The dynamic current generated Na+/K+ pump interacts with the h-current to control the bursting activity of oscillator heart interneurons.
    1. Structural Biology and Molecular Biophysics

    Allosteric signalling in the outer membrane translocation domain of PapC usher

    Irene Farabella, Thieng Pham ... Maya Topf
    Input from computational models has enabled the detection of allosteric communication that modulates the gating mechanism of a bacterial outer-membrane protein.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Ligand modulation of sidechain dynamics in a wild-type human GPCR

    Lindsay D Clark, Igor Dikiy ... Daniel M Rosenbaum
    Generation of a highly deuterated 13C-methyl labeled wild-type GPCR sample is used to facilitate characterization of the molecular environments and fast ps-ns dynamics of sidechains when the receptor is bound to ligands of different efficacy.
    1. Structural Biology and Molecular Biophysics

    Top-down machine learning approach for high-throughput single-molecule analysis

    David S White, Marcel P Goldschen-Ohm ... Baron Chanda
    A new analysis algorithm (DISC) enables accurate analysis of data from high-throughput single-molecule paradigms and reveals a non-cooperative binding mechanism of cyclic nucleotide-binding domains from HCN ion channels.
    1. Structural Biology and Molecular Biophysics

    Proton currents constrain structural models of voltage sensor activation

    Aaron L Randolph, Younes Mokrab ... Ian Scott Ramsey
    Electrophysiological and computational techniques provide a structural basis for understanding the conformational changes that are required to activate Hv1 proton channels.

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