425 results found
    1. Plant Biology

    Phloem unloading in Arabidopsis roots is convective and regulated by the phloem-pole pericycle

    Timothy J Ross-Elliott et al.
    A study of solute and macromolecule trafficking in plants reveals a previously undescribed route for carbon distribution in growing root tissues.
    1. Cell Biology
    2. Neuroscience

    Phosphatidylinositol 4,5-bisphosphate optical uncaging potentiates exocytosis

    Alexander M Walter et al.
    Increasing PI(4,5)P2 on a sub-second timescale using a novel, membrane-permeant UV activatable PI(4,5)P2 molecule augments exocytosis which requires the PI(4,5)P2 interacting exocytotic proteins Munc13-2 and synaptotagmin-1.
    1. Cell Biology
    2. Human Biology and Medicine

    A role of OCRL in clathrin-coated pit dynamics and uncoating revealed by studies of Lowe syndrome cells

    Ramiro Nández et al.
    Studies of Lowe syndrome patient cells, which lack the inositol 5-phosphatase OCRL, suggest that a defect in endocytosis plays a role in the pathological manifestations of the disease.
    1. Microbiology and Infectious Disease

    Cellular entry and uncoating of naked and quasi-enveloped human hepatoviruses

    Efraín E Rivera-Serrano et al.
    Quasi-enveloped hepatitis A virions undergo clathrin-mediated endocytosis, followed by ALIX-dependent trafficking to lysosomes where the quasi-envelope is degraded, triggering uncoating of the RNA genome in association with lysosomal membrane rupture.
    1. Cell Biology

    The mechanosensitive Piezo1 channel is required for bone formation

    Weijia Sun et al.
    Piezo1 functions as a key mechanotransducer for conferring mechanosensitivity to osteoblasts and determining mechanical-load-dependent bone formation, and represents a novel therapeutic target for treating osteoporosis or unloading-induced severe bone loss.
    1. Structural Biology and Molecular Biophysics

    Kinetics of HIV-1 capsid uncoating revealed by single-molecule analysis

    Chantal L Márquez et al.
    Disassembly of the HIV-1 capsid is a catastrophic process, whereby initiation and propagation can be controlled independently by molecules that bind to different features of the capsid lattice.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    MutSα maintains the mismatch repair capability by inhibiting PCNA unloading

    Yoshitaka Kawasoe et al.
    Biochemical analysis in Xenopus egg extracts reveals that the MutSα mismatch sensor retains the DNA-bound replication clamp to maintain a post-replicative temporal window permissive to strand-specific repair of mismatches.
    1. Biochemistry and Chemical Biology

    Stepwise assembly of the human replicative polymerase holoenzyme

    Mark Hedglin et al.
    Fluorescence resonance energy transfer has been used to explore the interactions between DNA polymerases, sliding clamps and clamp loaders as DNA is replicated in human cells.
    1. Chromosomes and Gene Expression

    The PCNA unloader Elg1 promotes recombination at collapsed replication forks in fission yeast

    Sanjeeta Tamang et al.
    Unloading the polymerase sliding clamp PCNA from DNA by Elg1 promotes recombination at the RTS1 replication fork barrier by limiting Fbh1 and Srs2 activity.
    1. Computational and Systems Biology
    2. Ecology

    Individual crop loads provide local control for collective food intake in ant colonies

    Efrat Esther Greenwald et al.
    Colony satiation level determines the unloading rate of laden foragers, which, in turn, rely on their own food load to adjust their foraging effort.

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