3,311 results found
    1. Structural Biology and Molecular Biophysics

    A lipid bound actin meshwork organizes liquid phase separation in model membranes

    Alf Honigmann, Sina Sadeghi ... Richard Vink
    A combination of imaging experiments and computer simulations on a model lipid membrane integrate the 'picket fence' and 'raft' models, and suggest that the interplay between actin binding, lipid phase separation and curvature compartmentalize the membrane.
    1. Physics of Living Systems
    2. Cell Biology

    Phase transitions of multivalent proteins can promote clustering of membrane receptors

    Sudeep Banjade, Michael K Rosen
    A new and general mechanism describes the organization of membrane proteins and their cytoplasmic ligands into micrometer-scale clusters, based on polymerization and concomitant phase separation of multivalent proteins.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Lactoferricins impair the cytosolic membrane of Escherichia coli within a few seconds and accumulate inside the cell

    Enrico F Semeraro, Lisa Marx ... Georg Pabst
    The damage of the bacterial cell envelope is found to be only a secondary effect of the antimicrobial activity of lactoferricin derivatives.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Synergistic phase separation of two pathways promotes integrin clustering and nascent adhesion formation

    Lindsay B Case, Milagros De Pasquale ... Michael K Rosen
    Biochemical and cell biological data suggest a model of nascent integrin adhesion complex formation based on synergistic phase separation of pathways surrounding the focal adhesion kinase (FAK) and the adaptor protein p130Cas.
    1. Physics of Living Systems

    Physical observables to determine the nature of membrane-less cellular sub-compartments

    Mathias L Heltberg, Judith Miné-Hattab ... Thierry Mora
    Two competing descriptions of membrane-less sub-compartments, liquid droplets and polymer binding aggregates, can be cast into a common theoretical framework and tested through single-particle tracking experiments.
    1. Cell Biology

    Multiple polarity kinases inhibit phase separation of F-BAR protein Cdc15 and antagonize cytokinetic ring assembly in fission yeast

    Rahul Bhattacharjee, Aaron R Hall ... Kathleen L Gould
    Biochemical studies and molecular dynamics simulations indicate that dephosphroylation of F-BAR protein Cdc15 promotes cytokinesis ring assembly in yeast via conformation change of intrinsically disorder regions and condensate formation.
    1. Structural Biology and Molecular Biophysics

    Nucleophosmin integrates within the nucleolus via multi-modal interactions with proteins displaying R-rich linear motifs and rRNA

    Diana M Mitrea, Jaclyn A Cika ... Richard W Kriwacki
    Nucleolar protein localization involves the phase separation within the nucleolar matrix via three types of multivalent features: acidic tracts, nucleic acid binding domains and arginine-rich low complexity sequences.
    1. Cell Biology

    Condensation of Ede1 promotes the initiation of endocytosis

    Mateusz Kozak, Marko Kaksonen
    Protein phase separation provides an explanation for the compositional flexibility of endocytic initiation and the role of multivalent disordered scaffolds in endocytosis.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Nucleolar dynamics and interactions with nucleoplasm in living cells

    Christina M Caragine, Shannon C Haley, Alexandra Zidovska
    The nucleoplasm surrounding nucleoli in living cells plays a key role in nucleolar dynamics and shape fluctuations in vivo.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Probing the effect of clustering on EphA2 receptor signaling efficiency by subcellular control of ligand-receptor mobility

    Zhongwen Chen, Dongmyung Oh ... Jay T Groves
    EphA2 receptor clustering enhances signaling transductions by increasing receptor phosphorylation and binding dwell time of downstream molecules in living cells.

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