40 results found
    1. Microbiology and Infectious Disease

    Single cell, super-resolution imaging reveals an acid pH-dependent conformational switch in SsrB regulates SPI-2

    Andrew Tze Fui Liew et al.
    Inside the acidic vacuole, expression, DNA binding and DNA binding affinity of the Salmonella regulator SsrB is stimulated by acid pH.
    1. Computational and Systems Biology
    2. Structural Biology and Molecular Biophysics

    Free-energy simulations reveal molecular mechanism for functional switch of a DNA helicase

    Wen Ma et al.
    Integration of structural bioinformatics and free-energy simulations reveals how a helicase switches its function from unwinding to rezipping DNA, during which a key metastable conformation is predicted and verified by single-molecule measurements.
    1. Biochemistry and Chemical Biology

    Dynamic regulation of transcription factors by nucleosome remodeling

    Ming Li et al.
    Single molecule DNA unzipping reveals a novel model for the regulation of transcription factors and nucleosome positioning via nucleosome remodeling in yeast.
    1. Structural Biology and Molecular Biophysics

    Transcription: Overcoming chromatin barriers

    Babette E de Jong, John van Noort
    Single-molecule experiments reveal the dynamics of transcription through a nucleosome with single-base-pair accuracy.
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    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    The Chd1 chromatin remodeler shifts hexasomes unidirectionally

    Robert F Levendosky et al.
    Oriented hexasomes can be generated using the Widom 601 positioning sequence, which enables straightforward production of nucleosomes with asymmetrically modified H2A/H2B dimers.
    1. Cell Biology
    2. Immunology and Inflammation

    Transient protein accumulation at the center of the T cell antigen-presenting cell interface drives efficient IL-2 secretion

    Danielle J Clark et al.
    A membrane-associated, supramolecular protein complex with dynamically changing components, the central supramolecular activation cluster, regulates the generation of the T cell effector cytokine IL-2 depending on its composition.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Synergy between RecBCD subunits is essential for efficient DNA unwinding

    Rani Zananiri et al.
    A new optical tweezers assay sheds light on the mechanism of cooperation and force generation by the subunits of RecBCD, critical for the repair of double strand breaks in bacteria.
    1. Cell Biology

    A novel mode of capping protein-regulation by twinfilin

    Adam B Johnston et al.
    Twinfilin functions as a pro-capping ligand of capping protein, dynamically competing with inhibitory ligands of capping proteinto control cellular actin assembly.
    1. Physics of Living Systems

    Ezrin enrichment on curved membranes requires a specific conformation or interaction with a curvature-sensitive partner

    Feng-Ching Tsai et al.
    Ezrin, an important actin-membrane linker, can zip adjacent membranes, be enriched to positively-curved membranes when phosphorylated and to negatively-curved membranes through a direct interaction with membrane curvature sensor I-BAR domain proteins.
    1. Computational and Systems Biology

    A molecular view on the escape of lipoplexed DNA from the endosome

    Bart MH Bruininks et al.
    The molecular insight in lipoplex transfection mechanisms helps in the development of efficient and affordable gene delivery systems.

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