8,509 results found
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Synchronized HIV assembly by tunable PIP2 changes reveals PIP2 requirement for stable Gag anchoring

    Frauke Mücksch et al.
    PI(4,5)P2 plays a much broader role during the HIV-1 particle assembly process than assumed; it is indispensable not only for recruitment of Gag to the plasma membrane but also for the maintenance of Gag assemblies.
    1. Neuroscience

    Decreased microRNA levels lead to deleterious increases in neuronal M2 muscarinic receptors in Spinal Muscular Atrophy models

    Patrick J O'Hern et al.
    In invertebrate and vertebrate models of Spinal Muscular Atrophy, diminished SMN protein causes Gemin3-dependent decreases in microRNA function, leading to upregulated M2 muscarinic receptor and deleterious consequences.
    1. Cell Biology

    The GARP complex is required for cellular sphingolipid homeostasis

    Florian Fröhlich et al.
    The retrograde vesicular trafficking GARP complex, which is mutated in a neurodegenerative disease, is important for sphingolipid homeostasis in yeast and mammalian cells.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    9Å structure of the COPI coat reveals that the Arf1 GTPase occupies two contrasting molecular environments

    Svetlana O Dodonova et al.
    A molecular model of the assembled COPI coat, determined by cryo-electron tomography of an in vitro reconstituted budding reaction, reveals details of interactions mediating coat assembly and shows the binding site of ArfGAP2.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cryo-EM visualization of the ribosome in termination complex with apo-RF3 and RF1

    Jesper Pallesen et al.
    Cryo-electron microscopy has been used to provide a structural interpretation of the complete action cycle of release factor 3 during translation termination, which includes a coordinated sequence of interactions with a class-I release factor and the ribosome.
    1. Cell Biology

    β-blockers augment L-type Ca2+ channel activity by targeting spatially restricted β2AR signaling in neurons

    Ao Shen et al.
    FRET biosensor-based measurement of cAMP signaling and single-channel recording reveal that β-blockers trigger local activation of adrenergic receptors and calcium channels in primary neurons.
    1. Cell Biology

    Aurora A depletion reveals centrosome-independent polarization mechanism in Caenorhabditis elegans

    Kerstin Klinkert et al.
    Experiments reveal mechanisms through which Caenorhabditis elegans zygotes depleted of Aurora A or lacking centrosomes spontaneously establish two posterior PAR-2 domains, one at each pole, in a curvature-dependent manner.
    1. Cell Biology

    Regulation of the PI3K pathway through a p85α monomer–homodimer equilibrium

    Lydia WT Cheung et al.
    The p85α homodimer plays a role in the PI3K pathway by regulating PTEN function.
    1. Evolutionary Biology

    Robust and accurate prediction of residue–residue interactions across protein interfaces using evolutionary information

    Sergey Ovchinnikov et al.
    Co-evolving residue pairs in the different components of a protein complex almost always make contact across the protein–protein interface, thus providing powerful restraints for the modeling of protein complexes.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Structural evidence for Scc4-dependent localization of cohesin loading

    Stephen M Hinshaw et al.
    Cohesin loading at centromeres depends on a conserved surface cluster of amino-acid residues on the cohesin loading protein, Scc4.

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