6,543 results found
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Claudin-2-dependent paracellular channels are dynamically gated

    Christopher R Weber et al.
    Paracellular, trans-tight junction channels, which communicate between two extracellular compartments without crossing the plasma membrane, are a new class of ion channel with unitary behaviors similar to traditional transmembrane channels.
    1. Neuroscience

    The retrotrapezoid nucleus neurons expressing Atoh1 and Phox2b are essential for the respiratory response to CO2

    Pierre-Louis Ruffault et al.
    The location of neurons responsible for increasing the breathing rate upon detecting elevated levels of CO2 in the blood has been pinpointed to the retrotrapezoid nucleus in the brainstem.
    1. Neuroscience

    Postictal behavioural impairments are due to a severe prolonged hypoperfusion/hypoxia event that is COX-2 dependent

    Jordan S Farrell et al.
    Local tissue hypoxia follows seizures, is responsible for postictal behavioural dysfunction rather than the seizures per se and can be treated.
    1. Cell Biology
    2. Developmental Biology

    The Sec14-like phosphatidylinositol transfer proteins Sec14l3/SEC14L2 act as GTPase proteins to mediate Wnt/Ca2+ signaling

    Bo Gong et al.
    Sec14l3/SEC14L2 respond to upstream Wnt/Frizzled/Dvl stimulation to recruit and activate phospholipase Cδ4a (Plcδ4a) to further initiate calcium release.
    1. Medicine

    Potential harmful effects of discontinuing ACE-inhibitors and ARBs in COVID-19 patients

    Gian Paolo Rossi et al.
    Current evidence does not suggest adverse effects of ACE inhibitors or ARBs in COVID-19 patients and, to the contrary, discontinuing these drugs in these patients may potentially be harmful.
    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. Neuroscience

    Doc2B acts as a calcium sensor for vesicle priming requiring synaptotagmin-1, Munc13-2 and SNAREs

    Sébastien Houy et al.
    Doc2B functions in two distinct vesicle priming steps; membrane localization occludes upstream Ca2+-dependent priming, whereas Ca2+-binding and interaction with synaptotagmin-1, SNAREs, and Munc13-2 are involved in downstream priming, which makes vesicles readily releasable.
    1. Chromosomes and Gene Expression
    2. Cancer Biology

    Transglutaminase 2 contributes to a TP53-induced autophagy program to prevent oncogenic transformation

    Shi Yun Yeo et al.
    Loss-of-function screening identified transglutaminase 2 (TGM2) as a putative tumor suppressor in the TP53 pathway and revealed that TGM2-mediated autophagy and CDKN1A-mediated cell cycle arrest are two critical barriers that prevent oncogenic transformation.
    1. Neuroscience

    Drosophila Synaptotagmin 7 negatively regulates synaptic vesicle release and replenishment in a dosage-dependent manner

    Zhuo Guan et al.
    Drosophila synaptotagmin 7 functions to restrict SV availability and release, but does not act as the Ca2+ sensor mediating the asynchronous release and facilitation remaining in synaptotagmin 1 mutants.
    1. Biochemistry and Chemical Biology

    Mechanisms of iron- and O2-sensing by the [4Fe-4S] cluster of the global iron regulator RirA

    Ma Teresa Pellicer Martinez et al.
    Molecular details of how the iron–sulfur cluster cofactor of a bacterial global iron regulatory protein simultaneously senses iron and O2 are revealed by mass spectrometry and spectroscopy.

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