349 results found
    1. Cell Biology
    2. Immunology and Inflammation

    Calcium influx through CRAC channels controls actin organization and dynamics at the immune synapse

    Catherine A Hartzell et al.
    By restricting actin polymerization to the perimeter of the immune synapse and promoting depolymerization, calcium influx drives centripetal actin flow, which confines CRAC channels and the endoplasmic reticulum to the synapse center.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    A FRET sensor of C-terminal movement reveals VRAC activation by plasma membrane DAG signaling rather than ionic strength

    Benjamin König et al.
    VRAC activation, observed with a FRET sensor of intracellular LRRC8-domains movement during gating and by fluorometry, requires plasma membrane localization and diacylglycerol signaling, but is independent of intracellular ionic strength.
    1. Chromosomes and Gene Expression
    2. Evolutionary Biology

    Cis-regulatory evolution integrated the Bric-à-brac transcription factors into a novel fruit fly gene regulatory network

    Maxwell J Roeske et al.
    The conserved biochemical activity of the duplicate Bab transcription factors were integrated into the regulatory hierarchy of an evolving gene regulatory network by binding site gains in a target gene's cis-regulatory region.
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    Mouse TRPA1 function and membrane localization are modulated by direct interactions with cholesterol

    Justyna B Startek et al.
    The activation and membrane localization of the broadly-tuned noxious chemosensory cation channel TRPA1 are regulated by direct interactions with cholesterol via CRAC motifs in transmembane segments 2 and 4.
    1. Cell Biology

    An essential and NSF independent role for α-SNAP in store-operated calcium entry

    Yong Miao et al.
    α-SNAP mediated rearrangement of Stim1 and Orai1 molecules within CRAC channel clusters is required for store-operated calcium entry.
    1. Cancer Biology
    2. Stem Cells and Regenerative Medicine

    De-repression of the RAC activator ELMO1 in cancer stem cells drives progression of TGFβ-deficient squamous cell carcinoma from transition zones

    Heather A McCauley et al.
    A new mechanism connects the loss of TGFβ signaling with invasion and metastasis in highly malignant transition zone tumors.
    1. Immunology and Inflammation

    LRRC8A is essential for hypotonicity-, but not for DAMP-induced NLRP3 inflammasome activation

    Jack P Green et al.
    Depletion of LRRC8A provides genetic evidence for the importance of Cl- channels in NLRP3 activation.
    1. Cell Biology

    SWELL1 regulates skeletal muscle cell size, intracellular signaling, adiposity and glucose metabolism

    Ashutosh Kumar et al.
    LRRC8A is an essential component of a mechanoresponsive ion channel signaling complex that tunes skeletal muscle differentiation, muscle cell size, function and metabolic pathways to regulate adiposity and systemic glycemia.
    1. Structural Biology and Molecular Biophysics

    A sulfur-aromatic gate latch is essential for opening of the Orai1 channel pore

    Priscilla S-W Yeung et al.
    Electrophysiological and molecular modeling studies identify a sulfur-aromatic interaction between the hydrophobic channel gate and a nearby methionine residue, termed the "gate latch", which is essential for Orai1 pore opening.
    1. Cell Biology

    The RhoGAP activity of CYK-4/MgcRacGAP functions non-canonically by promoting RhoA activation during cytokinesis

    Donglei Zhang, Michael Glotzer
    Activation of the key regulator of cytokinesis, RhoA, involves an unexpected contribution by a RhoGAP domain.

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