1,194 results found
    1. Structural Biology and Molecular Biophysics

    Large domain movements through the lipid bilayer mediate substrate release and inhibition of glutamate transporters

    Xiaoyu Wang, Olga Boudker
    Substrate releasing or inhibitor binding on the intracellular side of a glutamate transporter homologue require movements of the transport domain through the lipid membrane, which undergoes adaptive deformations.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    The lysosomal transporter MFSD1 is essential for liver homeostasis and critically depends on its accessory subunit GLMP

    David Massa López et al.
    The so far uncharacterized lysosomal transporter protein MFSD1 is essential for liver homeostasis and needs the highly glycosylated GLMP protein as an accessory subunit for stability.
    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

    Large-scale state-dependent membrane remodeling by a transporter protein

    Wenchang Zhou et al.
    The conformational mechanism of a transporter protein is found to have profound and energetically costly effects on the morphology of the surrounding membrane.
    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

    Thermodynamic evidence for a dual transport mechanism in a POT peptide transporter

    Joanne L Parker et al.
    Two thermodynamically distinct transport mechanisms operating within the same binding site explains the remarkable promiscuity of POT family transporters towards peptide and drug ligands.
    1. Structural Biology and Molecular Biophysics

    Sequence co-evolution gives 3D contacts and structures of protein complexes

    Thomas A Hopf et al.
    Interactions in protein complexes can be predicted from evolutionary information from genomic sequences.
    1. Cell Biology
    2. Plant Biology

    Fluorescent sensors reporting the activity of ammonium transceptors in live cells

    Roberto De Michele et al.
    A modified form of Green Fluorescent Protein integrated into an ammonium transporter provides a sensor that can be used to monitor transport activity in vivo.
    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.

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