2,879 results found
    1. Neuroscience

    Rap2 and TNIK control Plexin-dependent tiled synaptic innervation in C. elegans

    Xi Chen et al.
    Plexin controls the spatial distribution of synapses by locally inhibiting Rap2 small GTPase activity along the axon, and a Rap2 effector, TNIK, which also plays a key role in inhibiting synapse number.
    1. Biochemistry and Chemical Biology

    An explanation for origin unwinding in eukaryotes

    Lance D Langston, Michael E O'Donnell
    CMG helicase translocates with force while encircling duplex DNA, enabling two opposing CMG complexes at an origin to melt the duplex and switch to encircling separate single strands.
    1. Immunology and Inflammation
    2. Neuroscience

    Peripherally administered orexin improves survival of mice with endotoxin shock

    Yasuhiro Ogawa et al.
    When the neuropeptide orexin is peripherally administered in mice with septic shock, it penetrates the blood-brain barrier and acts in the brain to improve survival through multiple autonomic and neuroendocrine pathways.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A Meier-Gorlin syndrome mutation in a conserved C-terminal helix of Orc6 impedes origin recognition complex formation

    Franziska Bleichert et al.
    Electron microscopy uncovers the structure of the origin recognition complex (ORC) in metazoans, and reveals how mutations in the ORC6 subunit lead to Meier-Gorlin syndrome in humans.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structural basis for activation and non-canonical catalysis of the Rap GTPase activating protein domain of plexin

    Yuxiao Wang et al.
    The crystal structures of the intracellular part of the plexin receptor in the active dimer form, and its complex with a key downstream signalling protein Rap, provide insights into how plexin initiates a signalling cascade involved in axon guidance.
    1. Neuroscience

    Dissociating orexin-dependent and -independent functions of orexin neurons using novel Orexin-Flp knock-in mice

    Srikanta Chowdhury et al.
    Subtraction analysis using novel Orexin-Flp mice isolated physiological importance of orexin peptides.
    1. Developmental Biology
    2. Neuroscience

    Functional divergence of Plexin B structural motifs in distinct steps of Drosophila olfactory circuit assembly

    Ricardo Guajardo et al.
    Systematic in vivo analysis reveals the divergent engagement of Plexin B structural motifs in distinct neurodevelopmental processes and a regulatory role of convertase cleavage in Plexin B signaling.
    1. Biochemistry and Chemical Biology
    2. Chromosomes and Gene Expression

    A conserved Mcm4 motif is required for Mcm2-7 double-hexamer formation and origin DNA unwinding

    Kanokwan Champasa et al.
    Analysis of an essential motif in Mcm4 provides insights into replicative helicase double-hexamer formation and the first step requiring this intermediate during replication initiation.
    1. Structural Biology and Molecular Biophysics
    2. Microbiology and Infectious Disease

    Structural basis for the hijacking of endosomal sorting nexin proteins by Chlamydia trachomatis

    Blessy Paul et al.
    Chlamydia hijacks membrane trafficking proteins of the human host via the cytoplasmic domain of a secreted transmembrane protein.
    1. Cell Biology

    DNA Replication: Rethinking origin licensing

    Stephen P Bell
    Human cells that lack a subunit in their origin recognition complex are viable, which suggests the existence of alternative mechanisms to initiate DNA replication.
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