5,642 results found
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Tunable molecular tension sensors reveal extension-based control of vinculin loading

    Andrew S LaCroix et al.
    A quantitative understanding of molecular tension sensor function enables the production of unique sensors with desired mechanical properties as well as the ability to distinguish between protein force and protein deformation in mechanosensitive processes.
    1. Cell Biology

    Measuring NDC80 binding reveals the molecular basis of tension-dependent kinetochore-microtubule attachments

    Tae Yeon Yoo et al.
    Quantitative experiments and theory show that the tension-dependent regulation of NDC80 binding to kinetochore microtubules arises from a combination of the changing Aurora B concentration at NDC80 and the nonlinearity of Aurora B autoactivation.
    1. Developmental Biology
    2. Structural Biology and Molecular Biophysics

    Large, long range tensile forces drive convergence during Xenopus blastopore closure and body axis elongation

    David R Shook et al.
    Blastopore closure in Xenopus is driven by two morphogenic mechanisms that have strongly context dependent effects on tissue movement and that generate tensile force across tissues: convergent extension, as expected, and, unexpectedly, convergent thickening.
    1. Developmental Biology

    Axon tension regulates fasciculation/defasciculation through the control of axon shaft zippering

    Daniel Šmít et al.
    Competition between adhesive and tensile forces regulates axon fasciculation, thus introducing a new role of mechanical tension in the development of neural networks.
    1. Physics of Living Systems
    2. Neuroscience

    Mechanical sensitivity of Piezo1 ion channels can be tuned by cellular membrane tension

    Amanda H Lewis, Jörg Grandl
    Tension is the activating stimulus of Piezo1 mechanosensitive ion channels and resting membrane tension modulates overall channel sensitivity to mechanical stimulation.
    1. Developmental Biology

    Osteocalcin expressing cells from tendon sheaths in mice contribute to tendon repair by activating Hedgehog signaling

    Yi Wang et al.
    Cells in tendon sheaths, considered to be extrinsic tissues of tendon, possess stem or progenitor cell properties that are involved in tendon repair by activating the Hh-TGFb/Smad3 axis.
    1. Stem Cells and Regenerative Medicine

    Cell non-autonomous functions of S100a4 drive fibrotic tendon healing

    Jessica E Ackerman et al.
    Inhibition of S100a4 represents a novel anti-fibrotic target to improve tendon healing.
    1. Developmental Biology
    2. Stem Cells and Regenerative Medicine

    A distinct transition from cell growth to physiological homeostasis in the tendon

    Mor Grinstein et al.
    Mitotic labeling defines a change in cell division kinetics from growth to homeostasis and identifies slowly cycling cells in the adult tendon.
    1. Cell Biology
    2. Developmental Biology

    Mechanical force regulates tendon extracellular matrix organization and tenocyte morphogenesis through TGFbeta signaling

    Arul Subramanian et al.
    Perturbation of mechanical force at muscle attachments and its effects on tendon morphogenesis provides insights into the mechanisms underlying cellular responses to tensional force and resulting extracellular matrix production.
    1. Biochemistry and Chemical Biology

    RNA World: Visualizing primer extension without enzymes

    John C Chaput
    X-ray crystallography has been used to observe the synthesis of RNA in the absence of enzymes with atomic resolution.
    Insight
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