287 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Transient intracellular acidification regulates the core transcriptional heat shock response

    Catherine G Triandafillou et al.
    When translation stops, cells require intracellular acidification to turn on the conserved heat shock response during stress, and stress-triggered acidification (common in eukaryotes) is adaptive, promoting cell and population fitness.
    1. Cell Biology

    Impaired lysosomal acidification triggers iron deficiency and inflammation in vivo

    King Faisal Yambire et al.
    Impaired lysosomal acidification results in retention of iron inside lysosomes, triggering functional iron deficiency, dysfunctional mitochondria (especially mtDNA loss), and inflammation in vivo in a mouse model of lysosomal disease.
    1. Neuroscience

    Clathrin coat controls synaptic vesicle acidification by blocking vacuolar ATPase activity

    Zohreh Farsi et al.
    Parallel measurements of pH gradient and membrane potential at the single vesicle level have revealed that the synaptic vesicle acidification is initiated by removal of its clathrin coat, which blocks vesicular ATPase activity.
    1. Structural Biology and Molecular Biophysics

    BK channel inhibition by strong extracellular acidification

    Yu Zhou et al.
    Analysis of iconic and gating currents of wild type and mutated BK channels reveals a strong inhibition of this channel by extracellular acidification and elucidates the underlying mechanism that is potentially applicable to other voltage-dependent cation channels.
    1. Cell Biology
    2. Plant Biology

    TIR1/AFB-Aux/IAA auxin perception mediates rapid cell wall acidification and growth of Arabidopsis hypocotyls

    Matyáš Fendrych et al.
    The nuclear pathway for auxin perception is responsible for the rapid auxin-induced cell wall acidification and growth of aerial organs of plants.
    1. Ecology

    A SLC4 family bicarbonate transporter is critical for intracellular pH regulation and biomineralization in sea urchin embryos

    Marian Y Hu et al.
    Cellular carbon accumulation systems are a fundamental prerequisite for biomineralization to stabilize pH and to supply inorganic carbon for CaCO3 precipitation under changing environmental conditions.
    1. Cell Biology
    2. Neuroscience

    Degradation of engulfed mitochondria is rate-limiting in Optineurin-mediated mitophagy in neurons

    Chantell S Evans, Erika LF Holzbaur
    In neuronal mitophagy, Parkin and OPTN induce efficient sequestration of damaged somal mitochondria into autophagosomes, but slow turnover via lysosomal acidification may be a point of vulnerability for the cell.
    1. Cell Biology

    A genetic screen identifies new steps in oocyte maturation that enhance proteostasis in the immortal germ lineage

    Madhuja Samaddar et al.
    A whole-genome genetic screen links new aspects of oocyte maturation to proteostasis renewal in the immortal Caenorhabditis elegans germ-cell lineage and reveals similarities to somatic cell maintenance during aging.
    1. Structural Biology and Molecular Biophysics

    Discovery and characterization of Hv1-type proton channels in reef-building corals

    Gisela Rangel-Yescas et al.
    Proton channels are present in reef-building corals and constitute important molecular players that should help understand calcification and the response of these organisms to ocean acidification.
    1. Cell Biology

    H+- and Na+- elicited rapid changes of the microtubule cytoskeleton in the biflagellated green alga Chlamydomonas

    Yi Liu et al.
    Acidification and salt, which are two major stresses caused by environmental changes, swiftly and drastically alter the microtubule system in green algae and likely many other organisms.

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