71 results found
    1. Structural Biology and Molecular Biophysics

    Allosteric communication in DNA polymerase clamp loaders relies on a critical hydrogen-bonded junction

    Subu Subramanian et al.
    Deep mutagenesis of a clamp-loader complex reveals a critical hydrogen-bonded junction that is important for allosteric communication in oligomeric AAA+ ATPases.
    1. Structural Biology and Molecular Biophysics

    The phage L capsid decoration protein has a novel OB-fold and an unusual capsid binding strategy

    Rebecca L Newcomer et al.
    The structure of phage L's Dec demonstrates a new fold within this family of proteins, and shows modulation of capsid binding occurs through two sites, with site 1 being preferred.
    1. Biochemistry and Chemical Biology

    Stepwise assembly of the human replicative polymerase holoenzyme

    Mark Hedglin et al.
    Fluorescence resonance energy transfer has been used to explore the interactions between DNA polymerases, sliding clamps and clamp loaders as DNA is replicated in human cells.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The structure of the COPII transport-vesicle coat assembled on membranes

    Giulia Zanetti et al.
    A structure of the complete, membrane bound, COPII coat solved by sub-tomogram averaging reveals the arrangement of all protein subunits on the membrane and suggests a mechanism for coating heterogeneously-shaped carriers.
    1. Structural Biology and Molecular Biophysics

    Switch-like control of helicase processivity by single-stranded DNA binding protein

    Barbara Stekas et al.
    A single-stranded DNA binding protein stimulates helicase-mediated DNA unwinding by transiently activating a latent processivity switch in the helicase.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    A new topology of the HK97-like fold revealed in Bordetella bacteriophage by cryoEM at 3.5 Å resolution

    Xing Zhang et al.
    Cryo electron microscopy and structure-based mutagenesis reveal that the bacteriophage BPP-1 contains two of the three major recognized viral folds, one of which exhibits a new topology.
    1. Immunology and Inflammation

    Endothelial cell-derived CD95 ligand serves as a chemokine in induction of neutrophil slow rolling and adhesion

    Liang Gao et al.
    The cell surface protein CD95 mediates neutrophil slow rolling and adhesion during inflammation.
    1. Ecology

    Matrix-trapped viruses can prevent invasion of bacterial biofilms by colonizing cells

    Matthew C Bond et al.
    Microfluidic culture and high-resolution 3-D microscopy establish that bacteriophages trapped in the outer matrix layers of a bacterial biofilm remain active and can prevent colonization of the biofilm by newly arriving bacteria.
    1. Chromosomes and Gene Expression
    2. Structural Biology and Molecular Biophysics

    mRNA stem-loops can pause the ribosome by hindering A-site tRNA binding

    Chen Bao et al.
    By sterically hindering tRNA binding and inhibiting translation elongation, mRNA stem-loops can modulate gene expression.
    1. Microbiology and Infectious Disease

    Dominant Vibrio cholerae phage exhibits lysis inhibition sensitive to disruption by a defensive phage satellite

    Stephanie G Hays, Kimberley D Seed
    Genetic and molecular analyses identify and characterize an evolutionary battle over lysis timing wherein a bacteriophage delays lysis through lysis inhibition while a defensive phage satellite accelerates lysis.

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