3,714 results found
    1. Biochemistry and Chemical Biology

    A two-lane mechanism for selective biological ammonium transport

    Gordon Williamson et al.
    A new cellular transport mechanism splits the substrate and separately translocates its fragments to achieve selectivity.
    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

    Structural basis for mammalian nucleotide sugar transport

    Shivani Ahuja, Matthew R Whorton
    Crystal structures of the mouse CMP-sialic acid transporter in complex with both CMP and CMP-sialic acid reveal the mechanisms of substrate selectivity and transport.
    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. Structural Biology and Molecular Biophysics

    Cryo-EM structures and functional characterization of murine Slc26a9 reveal mechanism of uncoupled chloride transport

    Justin D Walter et al.
    The cryo-EM structure and functional characterization of the chloride-selective ion transporter Slc26a9 defines its oligomeric architecture and transport mechanism.
    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. Plant Biology

    Testing the Münch hypothesis of long distance phloem transport in plants

    Michael Knoblauch et al.
    Measurements of physiological and geometrical parameters of the sieve tube system in Ipomoea nil provide strong support for pressure driven mass flow.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A general method for determining secondary active transporter substrate stoichiometry

    Gabriel A Fitzgerald et al.
    A method for determining how many ions are required to drive transport in an electrogenic secondary active transporter will help understand the mechanisms of bacterial transporters whose structures have been solved.
    1. Microbiology and Infectious Disease

    An ECF-type transporter scavenges heme to overcome iron-limitation in Staphylococcus lugdunensis

    Angelika Jochim et al.
    An ECF-type transporter serves as broad-spectrum heme iron scavenger and allows an opportunistic pathogen to use multiple eukaryotic hemoproteins to overcome nutritional iron-limitation.
    1. Structural Biology and Molecular Biophysics

    Structure of bacterial phospholipid transporter MlaFEDB with substrate bound

    Nicolas Coudray et al.
    Structure of MlaFEDB ABC transporter with substrate bound in the outward-open pocket of MlaE provides mechanistic insights into lipid transport within the Gram-negative bacterial cell envelope.

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