381 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The magnesium transporter A is activated by cardiolipin and is highly sensitive to free magnesium in vitro

    Saranya Subramani et al.
    A magnesium transporter from Escherichia coli depends strongly on the lipid cardiolipin and acts both as a sensor and a transporter of magnesium.
    1. Microbiology and Infectious Disease

    Membrane voltage dysregulation driven by metabolic dysfunction underlies bactericidal activity of aminoglycosides

    Giancarlo Noe Bruni, Joel M Kralj
    Aminoglycosides are a class of antibiotics that can kill Escherichia coli by building up internal voltage through disrupting the normal consumption of ATP.
    1. Cell Biology

    SIRT2 deacetylase regulates the activity of GSK3 isoforms independent of inhibitory phosphorylation

    Mohsen Sarikhani et al.
    Mass spectroscopy, molecular modeling and/or molecular dynamics simulations reveal how acetylation regulates the activity of GSK3 isoforms independent of inhibitory phosphorylation.
    1. Neuroscience

    Cell-specific gain modulation by synaptically released zinc in cortical circuits of audition

    Charles T Anderson et al.
    Synaptic zinc is a novel modulator of cortical sound processing - a modulator that increases the gain of principal neurons, but reduces the gain of interneurons.
    1. Cell Biology

    Single-cell dynamics of pannexin-1-facilitated programmed ATP loss during apoptosis

    Hiromi Imamura et al.
    Cleavage of pannexin-1 channel by caspases facilitates the loss of intracellular ATP level and attenuates glycolytic metabolism of apoptotic cells.
    1. Cell Biology

    TRPV4 is the temperature-sensitive ion channel of human sperm

    Nadine Mundt et al.
    The molecular identity of the temperature-sensitive ion channel of human sperm that ensures depolarization is TRPV4.
    1. Structural Biology and Molecular Biophysics

    Epithelial magnesium transport by TRPM6 is essential for prenatal development and adult survival

    Vladimir Chubanov et al.
    Mice deficient in the TRPM6 channel suffer from impaired prenatal development, shortened lifespan, growth deficit and disturbed energy balance due to a defect in epithelial Mg2+ uptake, thus highlighting a pivotal role of TRPM6 in organismal Mg2+ homeostasis.
    1. Structural Biology and Molecular Biophysics
    2. Chromosomes and Gene Expression

    Dna2 nuclease-helicase structure, mechanism and regulation by Rpa

    Chun Zhou et al.
    X-ray crystallography reveals that the Dna2 nuclease-helicase contains a long tunnel through which single-stranded DNA threads, and an allosteric mechanism for displacing the DNA-binding protein Rpa that restricts cleavage to the proper polarity.
    1. Neuroscience
    2. Structural Biology and Molecular Biophysics

    Ca2+-dependent release of synaptotagmin-1 from the SNARE complex on phosphatidylinositol 4,5-bisphosphate-containing membranes

    Rashmi Voleti et al.
    Ca2+-free synaptotagmin-1 binds to neuronal SNARE complexes anchored on nanodiscs, and Ca2+ releases this interaction to induce tight, specific binding to PIP2-containing membranes.
    1. Neuroscience

    Spontaneous neurotransmission signals through store-driven Ca2+ transients to maintain synaptic homeostasis

    Austin L Reese, Ege T Kavalali
    Individual neurons can adjust the strength of their synapses by using spontaneous calcium influx through NMDA receptors to trigger the release of additional calcium from intracellular stores, which can in turn be used to regulate protein synthesis.

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