4,910 results found
    1. Cell Biology

    Multiplexed mRNA assembly into ribonucleoprotein particles plays an operon-like role in the control of yeast cell physiology

    Rohini R Nair et al.
    Prokaryotes use polycistronic messages for coordinated translation, whereas eukaryotic cells may achieve tunable protein synthesis by packaging monocistronic mRNAs into functional multiplexes via co-transcriptional interallelic coupling and non-canonical histone-H4 functions.
    1. Computational and Systems Biology

    Distributing tasks via multiple input pathways increases cellular survival in stress

    Alejandro A Granados et al.
    Single-cell experiments and mathematical modelling show that cellular signalling networks are vulnerable to trade-offs in speed versus accuracy, but that these vulnerabilities can be overcome by distributing the two tasks to different, although interacting, subnetworks.
    1. Structural Biology and Molecular Biophysics

    Dichotomous role of the human mitochondrial Na+/Ca2+/Li+ exchanger NCLX in colorectal cancer growth and metastasis

    Trayambak Pathak et al.
    Colorectal tumors down-regulate the mitochondrial Na+/Ca2+/Li+ exchanger (NCLX) to alter mitochondrial Ca2+ signaling and initiate transcriptional and metabolic reprogramming that drives tumor chemo-resistance and metastasis.
    1. Cell Biology

    Sec24 phosphorylation regulates autophagosome abundance during nutrient deprivation

    Saralin Davis et al.
    Phosphorylation of a core trafficking component, the COPII coat subunit Sec24, regulates cross-talk between the secretory and autophagy machinery during starvation.
    1. Cell Biology
    2. Neuroscience

    Small-molecule G-quadruplex stabilizers reveal a novel pathway of autophagy regulation in neurons

    Jose F Moruno-Manchon et al.
    G-quadruplex DNA regulates autophagy in neurons.
    1. Neuroscience

    Acetic acid activates distinct taste pathways in Drosophila to elicit opposing, state-dependent feeding responses

    Anita V Devineni et al.
    A single taste input, acetic acid, elicits opposing behavioral outputs depending on a fly's hunger state.
    1. Cell Biology

    Spatial quality control bypasses cell-based limitations on proteostasis to promote prion curing

    Courtney L Klaips et al.
    Cell division imposes a limit on proteostasis capacity by reducing chaperone accumulation, but chaperone-substrate interactions reverse these events to allow clearance of even chronically misfolded protein amyloids.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Peroxiredoxin promotes longevity and H2O2-resistance in yeast through redox-modulation of protein kinase A

    Friederike Roger et al.
    The major cytosolic yeast peroxiredoxin Tsa1 controls aging and H2O2-resistance by inhibiting protein kinase A through a conserved cysteine in the catalytic subunit activation loop and not by scavenging H2O2.
    1. Biochemistry and Chemical Biology
    2. Cancer Biology

    Mitochondrial Bol1 and Bol3 function as assembly factors for specific iron-sulfur proteins

    Marta A Uzarska et al.
    Cell biological, biochemical and structural studies reveal the mechanistic roles of two new mitochondrial iron-sulfur protein assembly factors, explaining the patho-biochemical defects of affected patients.
    1. Cell Biology

    Glucose restriction drives spatial reorganization of mevalonate metabolism

    Sean Rogers et al.
    Genetic and biochemical analyses, coupled with fluorescence imaging, reveal that spatial compartmentalization of HMG-CoA Reductases at yeast ER-lysosome contacts modulates mevalonate pathway flux during glucose restriction, enabling metabolic adaptation.

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