2,941 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structures in multiple conformations reveal distinct transition metal and proton pathways in an Nramp transporter

    Aaron T Bozzi, Christina M Zimanyi ... Rachelle Gaudet
    Nramp-family transporters adapt a common fold to a novel mechanism in which the spatial and temporal separation of like-charge transition metal and proton co-substrates circumvents the expected electrostatic repulsion.
    1. Microbiology and Infectious Disease

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

    Angelika Jochim, Lea Adolf ... Simon Heilbronner
    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

    Crystal structures of bacterial small multidrug resistance transporter EmrE in complex with structurally diverse substrates

    Ali A Kermani, Olive E Burata ... Randy B Stockbridge
    In the bacterial small multidrug transporter EmrE, sidechain rearrangements in the binding site accommodate structurally diverse substrates without major rearrangements of the protein backbone.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Glutathione binding to the plant AtAtm3 transporter and implications for the conformational coupling of ABC transporters

    Chengcheng Fan, Douglas C Rees
    Multiple cryo-electron microscopy structures of a plant ABC transporter exporting glutathione derivatives captured a closed conformation proposed to enforce the export directionality, while a complex central to the coupling mechanism containing both glutathione and closed nucleotide binding domains remains elusive.
    1. Biochemistry and Chemical Biology
    2. Plant Biology

    Origin and evolution of transporter substrate specificity within the NPF family

    Morten Egevang Jørgensen, Deyang Xu ... Barbara Ann Halkier
    Phylogenetic and biochemical analyses reveals a shared evolutionary path between biosynthesis and transport of defense metabolites in plants.
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

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

    Grégory Verdon, SeCheol Oh ... Olga Boudker
    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. Computational and Systems Biology
    2. Plant Biology

    Rapid transporter regulation prevents substrate flow traffic jams in boron transport

    Naoyuki Sotta, Susan Duncan ... Verônica A Grieneisen
    To avoid internal traffic jams of nutrients that they absorb, plants need to swiftly regulate the transporters that take up those nutrients.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Functional and structural characterization of an ECF-type ABC transporter for vitamin B12

    Joana A Santos, Stephan Rempel ... Dirk J Slotboom
    ECF-CbrT is a bacterial vitamin B12 transporter that is structurally different from the well-characterized transporter BtuCDF, yet has similar functional properties.
    1. Structural Biology and Molecular Biophysics

    Screening of candidate substrates and coupling ions of transporters by thermostability shift assays

    Homa Majd, Martin S King ... Edmund RS Kunji
    It is technically difficult to identify transport proteins, but here a method is presented that exploits the principle that they are stabilized in detergent solution when they bind their substrate.
    1. Microbiology and Infectious Disease

    The Toxoplasma monocarboxylate transporters are involved in the metabolism within the apicoplast and are linked to parasite survival

    Hui Dong, Jiong Yang ... Shaojun Long
    Combined cutting-edge technologies discovered a pair of carboxylate transporters that appears evolutionarily different among novel transporters and that is essential for parasite physiology.

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