1,415 results found
    1. Structural Biology and Molecular Biophysics

    Structural basis of phosphatidylcholine recognition by the C2–domain of cytosolic phospholipase A2α

    Yoshinori Hirano et al.
    The C2-domain of cytoplasmic phospholipase A2α is structurally designed to target PC-rich membrane regions to increase the enzymatic efficiency of the catalytic domain, which prefers PCs with polyunsaturated acyl chains.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Synaptotagmin-1 C2B domain interacts simultaneously with SNAREs and membranes to promote membrane fusion

    Shen Wang et al.
    When the Ca2+-binding loops of the C2B domain insert into a membrane, interactions with a phospholipid and the SNARE complex allow synaptotagmin-1 to bend the membrane.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Ring-like oligomers of Synaptotagmins and related C2 domain proteins

    Maria N Zanetti et al.
    A model for synchronous neurotransmitter release suggests that when not in the presence of calcium ions, Synaptotagmin proteins form ring-like structures between the vesicle and plasma membrane that prevent spontaneous fusion.
    1. Cell Biology

    ATP activation of peritubular cells drives testicular sperm transport

    David Fleck et al.
    Purinergic signaling controls mammalian sperm transport.
    1. Neuroscience
    2. Physics of Living Systems

    The neuronal calcium sensor Synaptotagmin-1 and SNARE proteins cooperate to dilate fusion pores

    Zhenyong Wu et al.
    During neurotransmitter release, calcium-induced membrane insertion of the C2B domain of Synaptotagmin re-orients the bound SNARE complex which dilates the fusion pore in a mechanical lever action.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Functional synergy between the Munc13 C-terminal C1 and C2 domains

    Xiaoxia Liu et al.
    Munc13 C-terminal domains synergize to coordinate synaptic vesicle docking, priming and fusion.
    1. Structural Biology and Molecular Biophysics

    Structural basis of substrate recognition by a polypeptide processing and secretion transporter

    Virapat Kieuvongngam et al.
    Cryo-EM structure of a peptidase-containing ABC transporter in complex with its protein substrate reveals a mechanism of coupling substrate cleavage to translocation.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Ca2+ entry into neurons is facilitated by cooperative gating of clustered CaV1.3 channels

    Claudia M Moreno et al.
    CaV1.3 channels of the short isoform are coupled via their C-terminal domains in a Ca2+-CaM-dependent manner, which facilitates Ca2+ influx and increases the discharge of hippocampal neurons.
    1. Neuroscience

    Heterodimerization of UNC-13/RIM regulates synaptic vesicle release probability but not priming in C. elegans

    Haowen Liu et al.
    RIM binding UNC-13L C2A domain releases UNC-13L from an autoinhibitory homodimeric complex to become fusion-competent, and regulates probability of synaptic vesicle release in the post-priming process.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    PtdInsP2 and PtdSer cooperate to trap synaptotagmin-1 to the plasma membrane in the presence of calcium

    Ángel Pérez-Lara et al.
    Two acidic membrane lipids increase synaptotagmin-1 dwell time and penetration into the membrane, reducing the membrane dissociation of synaptotagmin-1.

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