781 results found
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Coupled ion binding and structural transitions along the transport cycle of glutamate transporters

    Grégory Verdon et al.
    Crystal structures of an archaeal homologue of mammalian glutamate transporters in apo and ion-only bound outward- and inward-facing states reveal ion-coupled conformational changes supporting mechanisms of coupling, gating, and transport.
    1. Cell Biology

    The metal transporter ZIP13 supplies iron into the secretory pathway in Drosophila melanogaster

    Guiran Xiao et al.
    Drosophila ZIP13 (Slc39a13), a presumed zinc importer, is responsible for iron delivery to the secretory pathway.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Preacinetobactin not acinetobactin is essential for iron uptake by the BauA transporter of the pathogen Acinetobacter baumannii

    Lucile Moynié et al.
    The pathogen Acinetobacter baumannii recognises preacinetobactin not acinetobactin, yet appears likely to translocate both compounds through a mixed complex.
    1. Biochemistry and Chemical Biology

    Ion Channels: Keeping a lid on calcium uptake

    Vivek Garg, Yuriy Kirichok
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    1. Cell Biology

    Metal Transport: Pumping iron

    Caroline C Philpott
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    1. Structural Biology and Molecular Biophysics

    Kinetic mechanism of coupled binding in sodium-aspartate symporter GltPh

    SeCheol Oh, Olga Boudker
    Sodium ions control the rates of both substrate binding and dissociation of an archaeal homologue of glutamate transporters in a manner that minimizes binding intermediates and maximizes transport efficiency.
    1. Cell Biology

    The ER membrane protein complex interacts cotranslationally to enable biogenesis of multipass membrane proteins

    Matthew J Shurtleff et al.
    The ER membrane protein complex promotes the biogenesis of a subset multipass membrane proteins enriched for transporters and other proteins with destabilizing features in transmembrane domains.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Helical jackknives control the gates of the double-pore K+ uptake system KtrAB

    Marina Diskowski et al.
    The K(+) uptake system KtrAB is controlled by an allosteric mechanism entirely new for membrane channels, which operates the channel gate over a 35 Å distance.
    1. Biochemistry and Chemical Biology

    Dual functions of a small regulatory subunit in the mitochondrial calcium uniporter complex

    Ming-Feng Tsai et al.
    Studies of EMRE, one of the four essential protein subunits in the mitochondrial calcium uniporter complex that regulates calcium ion levels in mitochondria, reveal new details about the physical interactions between the subunits.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The conserved aspartate ring of MCU mediates MICU1 binding and regulation in the mitochondrial calcium uniporter complex

    Charles B Phillips et al.
    Biochemical analysis reveals molecular mechanisms underlying the activation of the mitochondrial Ca2+ uniporter by intracellular Ca2+ signals.

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