1,100 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Cofilin-induced unidirectional cooperative conformational changes in actin filaments revealed by high-speed atomic force microscopy

    Kien Xuan Ngo et al.
    A cluster of cofilin along an otherwise bare actin filament induces distinctively asymmetric cooperative conformational changes to the filament on either side of the cluster.
    1. Developmental Biology
    2. Physics of Living Systems

    Rapid changes in tissue mechanics regulate cell behaviour in the developing embryonic brain

    Amelia J Thompson et al.
    During embryonic development, tissue stiffness, which provides an important signal to motile cells, changes locally within tens of minutes in a well-controlled manner.
    1. Cell Biology
    2. Developmental Biology

    Organ sculpting by patterned extracellular matrix stiffness

    Justin Crest et al.
    Direct measurement of finely patterned mechanical properties in a native basement membrane demonstrate how force asymmetries arising from this extracellular matrix, rather than from cells, can precisely sculpt a tissue.
    1. Biochemistry and Chemical Biology

    Optical manipulation of sphingolipid biosynthesis using photoswitchable ceramides

    Matthijs Kol et al.
    Photoswitchable ceramides containing an azobenzene photoswitch behave as light-controllable substrates for both sphingomyelin synthase and glucosylceramide synthase.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Protein flexibility is required for vesicle tethering at the Golgi

    Pak-yan Patricia Cheung et al.
    Atomic force microscopy reveals a floppy, dimeric, coiled coil Golgin structure that captures transport vesicles via splayed, N-terminal ends at the Golgi complex.
    1. Plant Biology

    Altered N-glycan composition impacts flagella-mediated adhesion in Chlamydomonas reinhardtii

    Nannan Xu et al.
    Adhesion force measurements reveal that proper N-glycosylation of flagellar membrane proteins is crucial for adhering C. reinhardtii cells onto surfaces.
    1. Structural Biology and Molecular Biophysics

    Stepwise visualization of membrane pore formation by suilysin, a bacterial cholesterol-dependent cytolysin

    Carl Leung et al.
    Electron and atomic force microscopy show how bacterial toxins bind to a host membrane and assemble into arcs and rings, before undergoing a dramatic, concerted conformational change to insert into the membrane.
    1. Biochemistry and Chemical Biology

    Unexpected sequences and structures of mtDNA required for efficient transcription from the first heavy-strand promoter

    Akira Uchida et al.
    Hypervariable regions of mtDNA contribute to transcriptional regulation by serving as sites for TFAM binding and looping.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Mechanical force induces mitochondrial fission

    Sebastian Carsten Johannes Helle et al.
    Mechanically stimulating mitochondria causes them to divide via the recruitment of the mitochondrial fission machinery to the mechanically strained site, showing that intracellular organelles can be mechanoresponsive.
    1. Physics of Living Systems

    Biophysical properties of single rotavirus particles account for the functions of protein shells in a multilayered virus

    Manuel Jiménez-Zaragoza et al.
    In triple-layered rotavirus particles, strong interaction between the external and middle layers provides high mechanical strength for protection tasks, while weaker interaction between the middle and inner layers favors transcription.

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