5,766 results found
    1. Physics of Living Systems

    Single molecule microscopy reveals key physical features of repair foci in living cells

    Judith Miné-Hattab et al.
    Upon DNA damage, Rad52 forms a membraneless sub-compartment where Rad52 molecules are highly dynamic and share properties with liquid-liquid phase-separated molecules, reflecting the existence of a liquid droplet around damaged DNA.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Role of BRCA2 DNA-binding and C-terminal domain in its mobility and conformation in DNA repair

    Maarten W Paul et al.
    Highly conserved C-terminal domains of the tumor suppressor BRCA2 are not essential for accumulation at damaged DNA but affect conformation and cell survival, implying roles beyond delivering strand-exchange protein RAD51.
    1. Cell Biology
    2. Physics of Living Systems

    The transition state and regulation of γ-TuRC-mediated microtubule nucleation revealed by single molecule microscopy

    Akanksha Thawani et al.
    Four αβ-tubulin dimers associate laterally on γ-TuRC to define the rate-limiting transition state for microtubule nucleation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cellular encoding of Cy dyes for single-molecule imaging

    Lilia Leisle et al.
    Cyanine fluorophores are encoded as non-canonical amino acids to produce functional proteins in cell-free translation systems and live cells for single-molecule imaging.
    1. Cell Biology

    A robust method for particulate detection of a genetic tag for 3D electron microscopy

    James Rae et al.
    Development of a new system for gold particle detection of a genetic tag for electron microscopy.
    1. Structural Biology and Molecular Biophysics

    Kinetics of HIV-1 capsid uncoating revealed by single-molecule analysis

    Chantal L Márquez et al.
    Disassembly of the HIV-1 capsid is a catastrophic process, whereby initiation and propagation can be controlled independently by molecules that bind to different features of the capsid lattice.
    1. Physics of Living Systems

    Full assembly of HIV-1 particles requires assistance of the membrane curvature factor IRSp53

    Kaushik Inamdar et al.
    The formation of HIV-1 particles requires a bending of the membrane that cannot be achieved by the Gag protein alone and thus there is need for the I-BAR protein IRSp53 to aid in the formation of HIV-1 buds.
    1. Biochemistry and Chemical Biology

    Imaging and energetics of single SSB-ssDNA molecules reveal intramolecular condensation and insight into RecOR function

    Jason C Bell et al.
    Individual SSB-ssDNA complexes undergo reversible condensation and de-condensation that is modulated by RecOR during recombination.
    1. Chromosomes and Gene Expression
    2. Genetics and Genomics

    Live-cell single-molecule tracking highlights requirements for stable Smc5/6 chromatin association in vivo

    Thomas J Etheridge et al.
    In vivo single-molecule imaging demonstrates that Smc5/6 chromatin association depends on ATP hydrolysis and dsDNA binding, requires Nse6 and is modulated by Brc1 after DNA damage.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    ParB dynamics and the critical role of the CTD in DNA condensation unveiled by combined force-fluorescence measurements

    Julene Madariaga-Marcos et al.
    A single-molecule biophysical approach reveals that the C-terminal domain of ParB blocks ParB network formation by heterodimerization with the full-length protein, which remains bound to the DNA.

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