163 results found
    1. Structural Biology and Molecular Biophysics

    ER-luminal [Ca2+] regulation of InsP3 receptor gating mediated by an ER-luminal peripheral Ca2+-binding protein

    Horia Vais et al.
    Calcium release from the endoplasmic reticulum through the IP3 receptor ion channel is strongly regulated by a calcium-binding protein in the lumen of the endoplasmic reticulum.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Mitochondria supply ATP to the ER through a mechanism antagonized by cytosolic Ca2+

    Jing Yong et al.
    ATP enters the endoplasmic reticulum (ER) lumen through an SLC35B1/AXER-dependentCaATiER mechanism, and ATP usage in the ER renders 'anti-Warburg' effect by increasing ATP regeneration from OxPhos while decreasing glycolysis.
    1. Cell Biology

    Intact protein folding in the glutathione-depleted endoplasmic reticulum implicates alternative protein thiol reductants

    Satoshi Tsunoda et al.
    Adapting a cytosolic enzyme that breaks down glutathione to function in the lumen of the endoplasmic reticulum challenges the long-held view that reduced glutathione fuels disulfide rearrangements during protein folding.
    1. Cell Biology

    Endoplasmic Reticulum: Keeping in shape

    Craig Blackstone, William A Prinz
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    1. Cell Biology
    2. Developmental Biology

    The CHORD protein CHP-1 regulates EGF receptor trafficking and signaling in C. elegans and in human cells

    Andrea Haag et al.
    The co-chaperone CHORDC1 is specifically required for epidermal growth factor receptor trafficking and signaling in Caenorhabditis elegans and in human cells.
    1. Genetics and Genomics

    Multiplexed measurement of variant abundance and activity reveals VKOR topology, active site and human variant impact

    Melissa A Chiasson et al.
    Human vitamin K epoxide reductase (VKOR) has a four transmembrane domain topology that supports the use of a homology model, enabling identification of active site residues and human variant impact.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    A polyomavirus peptide binds to the capsid VP1 pore and has potent antiviral activity against BK and JC polyomaviruses

    Joshua R Kane et al.
    A peptide derived from BK and JC polyomavirus protein VP2/3 inhibits viral infection by targeting a binding site in the pore of polyomavirus VP1 pentamers, enabling future VP1-targeted therapeutic strategies.
    1. Cell Biology
    2. Neuroscience

    Transverse tubule remodeling enhances Orai1-dependent Ca2+ entry in skeletal muscle

    Antonio Michelucci et al.
    Structural and functional analyses show that transverse tubule association with stacks of sarcoplasmic reticulum enhances Orai1-dependent Ca2+ entry to replenish Ca2+ stores, maintain Ca2+ release, and maximize force during exercise.
    1. Microbiology and Infectious Disease

    The ER membrane protein complex is required to ensure correct topology and stable expression of flavivirus polyproteins

    Ashley M Ngo et al.
    The ER membrane protein complex (EMC) facilitates the correct topology of the flavivirus non-structural proteins NS4A and NS4B at the ER membrane critical for viral replication.
    1. Microbiology and Infectious Disease

    Differential requirements for cyclase-associated protein (CAP) in actin-dependent processes of Toxoplasma gondii

    Alex Hunt et al.
    Partially overlapping functions of a limited subset of actin binding proteins allow the parasite Toxoplasma gondii to achieve actin regulation required for complex cellular processes.

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