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

    Coupling of remote alternating-access transport mechanisms for protons and substrates in the multidrug efflux pump AcrB

    Thomas Eicher et al.
    A transport mechanism is uncovered in the major drug-efflux system in E. coli involving two remote alternating-access conformational cycles, which could provide the basis for the development of allosteric inhibitors against multidrug resistance.
    1. Structural Biology and Molecular Biophysics

    An allosteric transport mechanism for the AcrAB-TolC multidrug efflux pump

    Zhao Wang et al.
    The tripartite drug efflux pump AcrA-AcrB-TolC, representative of a wide group of pumps from Gram-negative bacteria, enters a transport-competent state through long-distance conformational changes that switch the channel from a closed to an open state.
    1. Plant Biology

    Auxin efflux by PIN-FORMED proteins is activated by two different protein kinases, D6 PROTEIN KINASE and PINOID

    Melina Zourelidou et al.
    Two protein kinases are required to activate auxin efflux transporters from plants.
    1. Neuroscience

    Magnesium efflux from Drosophila Kenyon cells is critical for normal and diet-enhanced long-term memory

    Yanying Wu et al.
    Regulated neuronal magnesium efflux is a critical element of normal and magnesium-enhanced memory.
    1. Cell Biology

    The yeast H+-ATPase Pma1 promotes Rag/Gtr-dependent TORC1 activation in response to H+-coupled nutrient uptake

    Elie Saliba et al.
    The H+ influx coupled to nutrient uptake and the plasma membrane H+-ATPase are central actors of the activation of target of rapamycin complex 1 (TORC1) in budding yeast Saccharomyces cerevisiae..
    1. Neuroscience

    Impaired ABCA1/ABCG1-mediated lipid efflux in the mouse retinal pigment epithelium (RPE) leads to retinal degeneration

    Federica Storti et al.
    Lipid efflux by the retinal pigment epithelium is crucial for proper retinal integrity and function, and its impairment may contribute to diseases like age-related macular degeneration.
    1. Neuroscience

    Aquaporin-4-dependent glymphatic solute transport in the rodent brain

    Humberto Mestre et al.
    An international collaboration between five independent research groups replicates findings confirming the importance of aquaporin-4 in glymphatic solute transport using five different mouse knockout lines.
    1. Chromosomes and Gene Expression
    2. Computational and Systems Biology

    Caenorhabditis elegans methionine/S-adenosylmethionine cycle activity is sensed and adjusted by a nuclear hormone receptor

    Gabrielle E Giese et al.
    Metabolic activity of the methionine/S-adenosylmethionine cycle is sensed and transcriptionally regulated by a nuclear hormone receptor in Caenorhabditis elegans in order to maintain metabolic homeostasis in a tightly controlled regime.
    1. Cell Biology
    2. Structural Biology and Molecular Biophysics

    Molecular determinants of large cargo transport into the nucleus

    Giulia Paci et al.
    Efficient nuclear transport of very large biomolecules, relevant for viral transport, scales non-linearly with size and its kinetics can be explained by a simple two-parameter energetic model.
    1. Cell Biology

    A highly responsive pyruvate sensor reveals pathway-regulatory role of the mitochondrial pyruvate carrier MPC

    Robinson Arce-Molina et al.
    A user-friendly genetically-encoded fluorescent sensor of improved dynamic range is introduced to facilitate the study of mitochondrial metabolism and diversity.

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