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    1. Cell Biology
    2. Developmental Biology

    A polarity pathway for exocyst-dependent intracellular tube extension

    Joshua Abrams, Jeremy Nance
    Lumen extension in intracellular tubes relies on a molecular pathway involving Rho GTPase signaling, cell polarity, and vesicle-tethering proteins.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Compaction and segregation of sister chromatids via active loop extrusion

    Anton Goloborodko et al.
    Loop extrusion can robustly compact, segregate and disentangle mammalian chromosomes, suggesting it is a universal mechanism of genome folding during cell division.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A novel N-terminal extension in mitochondrial TRAP1 serves as a thermal regulator of chaperone activity

    James R Partridge et al.
    Cytosolic and organellar Hsp90s from higher eukaryotes have evolved a variable, and environmentally responsive N-terminal extension to regulate their activity.
    1. Neuroscience

    Navigating the garden of forking paths for data exclusions in fear conditioning research

    Tina B Lonsdorf et al.
    Exclusion of participants in tasks with a learning element can introduce substantial bias and needs to be carefully considered and transparently reported and justified.
    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. 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. Cell Biology
    2. Chromosomes and Gene Expression

    Cohesin and condensin extrude DNA loops in a cell cycle-dependent manner

    Stefan Golfier et al.
    Reconstitution of DNA loop extrusion in cellular contexts using Xenopus egg extracts shows that condensin extrudes DNA loops non-symmetrically in metaphase, whereas cohesin extrudes DNA loops symmetrically in interphase.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    A mechanism for the extension and unfolding of parallel telomeric G-quadruplexes by human telomerase at single-molecule resolution

    Bishnu P Paudel et al.
    Human telomerase unfolds and extends parallel G-quadruplexes using a unique mechanism involving its RNA template.
    1. Neuroscience

    A multicellular rosette-mediated collective dendrite extension

    Li Fan et al.
    Migrating skin carries the amphid rosette vertex anteriorly to extrude and position dendrites.
    1. Cell Biology
    2. Plant Biology

    Stromule extension along microtubules coordinated with actin-mediated anchoring guides perinuclear chloroplast movement during innate immunity

    Amutha Sampath Kumar et al.
    Stromules induced during plant innate immunity dynamically interact and use the cytoskeleton to form and to direct the movement of chloroplasts.