99 results found
    1. Structural Biology and Molecular Biophysics
    2. Computational and Systems Biology

    CryoEM and computer simulations reveal a novel kinase conformational switch in bacterial chemotaxis signaling

    C Keith Cassidy et al.
    An atomic model of the bacterial chemosensory array obtained through the synthesis of cryo-electron tomography and large-scale molecular-dynamics simulations reveals a new kinase conformation during signaling events.
    1. Structural Biology and Molecular Biophysics

    Model for a novel membrane envelope in a filamentous hyperthermophilic virus

    Peter Kasson et al.
    A novel membrane, formed by a monolayer of lipids in a U-shaped conformation, envelops a virus that can withstand extremes of temperature and acidity.
    1. Epidemiology and Global Health
    2. Microbiology and Infectious Disease

    Science Forum: Viral factors in influenza pandemic risk assessment

    Marc Lipsitch et al.
    We identify key strengths and limitations in use of viral genotyping and phenotyping to estimate pandemic risk from influenza A viruses, focusing on 3 traits, hemagglutinin binding specificity, hemagglutinin pH of activation, and polymerase complex efficiency.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Sec17/Sec18 act twice, enhancing membrane fusion and then disassembling cis-SNARE complexes

    Hongki Song et al.
    Sec17 (αSNAP) and Sec18 (NSF) are shown to act twice, to promote fusion per se and to recycle SNAREs after fusion.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Plasmodium falciparum parasites deploy RhopH2 into the host erythrocyte to obtain nutrients, grow and replicate

    Natalie A Counihan et al.
    Plasmodium parasites secrete RhopH2 from the rhoptry organelle into their host red blood cell to facilitate the uptake of essential nutrients required for parasite replication and survival.
    1. Physics of Living Systems

    A physical model describing the interaction of nuclear transport receptors with FG nucleoporin domain assemblies

    Raphael Zahn et al.
    A homopolymer-sphere model is shown to accurately reproduce the interactions that underpin selective gating of macromolecular transport into and out of the cell nucleus.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The role of Cdc42 and Gic1 in the regulation of septin filament formation and dissociation

    Yashar Sadian et al.
    Imaging with electron microscopy and cryo-electron tomography reveals that competition between Cdc42 and Gic1 for the same subunit within septins controls the formation and breakdown of septin filaments.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The ER–Golgi intermediate compartment is a key membrane source for the LC3 lipidation step of autophagosome biogenesis

    Liang Ge et al.
    A cell-free biochemical assay for protein lipidation identifies the ER–Golgi intermediate compartment as a key early station in the formation of an autophagosome.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Mycobacterium tuberculosis induces decelerated bioenergetic metabolism in human macrophages

    Bridgette M Cumming et al.
    Quantifiable bioenergetic parameters, determined from extracellular flux analyses, are distinct between macrophages infected with Mycobacteriumtuberculosis or vaccine strain M. bovis BCG, enabling assessment of future vaccine and drug efficacy.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Regulating G protein-coupled receptors by topological inversion

    Bray Denard et al.
    Multiple biochemical assays show that the topology of CCR5 and possibly other GPCRs may be inverted by ceramide or other sphingolipids through the process of regulated alternative translocation.

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