51 results found
    1. Structural Biology and Molecular Biophysics

    Reconstitution of selective HIV-1 RNA packaging in vitro by membrane-bound Gag assemblies

    Lars-Anders Carlson, Yun Bai ... James H Hurley
    In vitro reconstitution shows how HIV-1 Gag assemblies on membranes can package the RNA genome in the presence of a vast excess of competing cellular RNAs, and that selectivity and immature lattice assembly are deeply intertwined with one another.
    1. Structural Biology and Molecular Biophysics

    Identification of electroporation sites in the complex lipid organization of the plasma membrane

    Lea Rems, Xinru Tang ... Lucie Delemotte
    Advanced data analysis of molecular dynamics simulations of complex lipid membranes provides a quantitative and predictive model of the molecular features that control electroporation.
    1. Cell Biology

    Oscillatory phase separation in giant lipid vesicles induced by transmembrane osmotic differentials

    Kamila Oglęcka, Padmini Rangamani ... Atul N Parikh
    Spontaneous osmoregulation in giant phospholipid vesicles, which is characterized by oscillations in vesicle size and membrane tension, couples to the compositional degrees of freedom at the membrane surface to produce oscillations in domain texture and induce isothermal phase change.
    1. Neuroscience

    α-Synuclein plasma membrane localization correlates with cellular phosphatidylinositol polyphosphate levels

    Reeba Susan Jacob, Cédric Eichmann ... Philipp Selenko
    Plasma membrane clusters of the Parkinson's disease protein α-synuclein colocalize with negatively charged phospholipids involved in endocytosis and exocytosis.
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    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The autophagy adaptor NDP52 and the FIP200 coiled-coil allosterically activate ULK1 complex membrane recruitment

    Xiaoshan Shi, Chunmei Chang ... James H Hurley
    Hydrogen-deuterium exchange, electron microscopy, and vesicle reconstitution show how binding of the autophagy adaptor NDP52 to the FIP200 subunit of the ULK1 complex triggers membrane binding in autophagy.
    1. Physics of Living Systems

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

    Kaushik Inamdar, Feng-Ching Tsai ... Delphine Muriaux
    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. Structural Biology and Molecular Biophysics

    Synergistic roles of Synaptotagmin-1 and complexin in calcium-regulated neuronal exocytosis

    Sathish Ramakrishnan, Manindra Bera ... Shyam S Krishnakumar
    Cooperative action of synaptotagmin and complexin is needed to arrest all SNARE complexes on a vesicle, and the reversal of the synaptotagmin clamp is sufficient to achieve fast, Ca2+-synchronized fusion.
    1. Microbiology and Infectious Disease

    Structural basis for capsid recruitment and coat formation during HSV-1 nuclear egress

    Elizabeth B Draganova, Jiayan Zhang ... Ekaterina E Heldwein
    Interactions were visualized between the nuclear egress complex from herpes simplex virus and a capsid protein that could promote nucleocytoplasmic translocation of the capsid in infected cells.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Molecular determinants of complexin clamping and activation function

    Manindra Bera, Sathish Ramakrishnan ... James E Rothman
    Complexin, in conjunction with Synaptotagmin, clamps the SNARE-assembly process under resting conditions and promote vesicle fusion in response to calcium signal.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Membrane binding controls ordered self-assembly of animal septins

    Agata Szuba, Fouzia Bano ... Gijsje H Koenderink
    Nanoscaleimaging reveals that animal septins form dense filamentous networks on biomimeticlipid membranes, explaining how septins may regulate cell surface rigidity.

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