34 results found
    1. Cell Biology
    2. Chromosomes and Gene Expression

    HRI coordinates translation necessary for protein homeostasis and mitochondrial function in erythropoiesis

    Shuping Zhang et al.
    The heme and HRI-mediated eIF2aP–ATF4 integrated stress response in erythropoiesis has a major global impact, especially under the stress condition of iron deficiency.
    1. Structural Biology and Molecular Biophysics
    2. Computational and Systems Biology

    Prediction of enzymatic pathways by integrative pathway mapping

    Sara Calhoun et al.
    A computational method identifies the functions of orphan enzymes by organizing them into metabolic pathways; the prediction of a new l-gulonate catabolic pathway is experimentally tested and confirmed.
    1. Neuroscience

    Endocannabinoid signaling enhances visual responses through modulation of intracellular chloride levels in retinal ganglion cells

    Loïs S Miraucourt et al.
    Endocannabinoid activation of the CB1 receptor on retinal ganglion cells in the eye results in enhanced excitability and responsiveness to visual stimulation through a novel mechanism involving intracellular chloride regulation.
    1. Structural Biology and Molecular Biophysics

    2.8 Å resolution reconstruction of the Thermoplasma acidophilum 20S proteasome using cryo-electron microscopy

    Melody G Campbell et al.
    Water molecules and amino-acid side chain rotamers have been resolved in the cryoEM structure of T20S proteasome at 2.8 angstroms.
    1. Neuroscience

    Loss of Frataxin induces iron toxicity, sphingolipid synthesis, and Pdk1/Mef2 activation, leading to neurodegeneration

    Kuchuan Chen et al.
    In Drosophila, the loss of Frataxin causes iron accumulation in the nervous system, which in turn enhances sphingolipid synthesis and activation of PDK1 and Mef2, which leads to neurodegeneration.
    1. Cell Biology

    Bax and Bak function as the outer membrane component of the mitochondrial permeability pore in regulating necrotic cell death in mice

    Jason Karch et al.
    The proteins Bax and Bak, which increase the permeability of the mitochondrial membrane during apoptosis, are also crucial for generating a mitochondrial membrane pore that is specifically involved in necrosis.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Hemozoin produced by mammals confers heme tolerance

    Rini H Pek et al.
    Heme accumulation is toxic, but deficiency of the heme transporter HRG1/SLC48A1 causes heme sequestration and crystallization into hemozoin within enlarged lysosomes of macrophages, thereby conferring heme tolerance to mammals.
    1. Genetics and Genomics

    The endonuclease Cue2 cleaves mRNAs at stalled ribosomes during No Go Decay

    Karole N D'Orazio et al.
    Cue2 is an endonuclease that cleaves mRNA in the A site of the lagging ribosome upon ribosome collision events.
    1. Physics of Living Systems
    2. Neuroscience

    Physical limits to magnetogenetics

    Markus Meister
    Recent reports on the ability of biological molecules to sense magnetic fields are found to be inconsistent with basic physical principles.
    1. Biochemistry and Chemical Biology

    Global cellular response to chemotherapy-induced apoptosis

    Arun P Wiita et al.
    The simultaneous monitoring of transcription, translational control, protein production and proteolysis in the same system can improve our understanding of how cancer cells respond to chemotherapy.

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