3,769 results found
    1. Structural Biology and Molecular Biophysics
    2. Neuroscience

    Direct assessment of substrate binding to the Neurotransmitter:Sodium Symporter LeuT by solid state NMR

    Simon Erlendsson, Kamil Gotfryd ... Claus J Loland
    Solid state NMR is unable to detect any association of substrate to the second binding site, S2, in the extracellular vestibule of the Neurotransmitter:Sodium Symporter LeuT.
    1. Biochemistry and Chemical Biology

    Mia40 is a trans-site receptor that drives protein import into the mitochondrial intermembrane space by hydrophobic substrate binding

    Valentina Peleh, Emmanuelle Cordat, Johannes M Herrmann
    The import of proteins into the intermembrane space of mitochondria is driven by binding to the trans-site receptor Mia40 and not by the oxidation of cysteine residues.
    1. Biochemistry and Chemical Biology

    Nicotinamide mononucleotide adenylyltransferase uses its NAD+ substrate-binding site to chaperone phosphorylated Tau

    Xiaojuan Ma, Yi Zhu ... Dan Li
    Mechanistic insight into the chaperone-like activity of NMNAT to phosphorylated Tau reveals a connection between NAD+metabolism and Tau homeostasis.
    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. Structural Biology and Molecular Biophysics

    Structural and biophysical analysis of a Haemophilus influenzae tripartite ATP-independent periplasmic (TRAP) transporter

    Michael J Currie, James S Davies ... Rachel A North
    Structure of the dimeric Haemophilus influenzae TRAP transporter (SiaQM) reveals two Na+ sites, the substrate-binding site and lipid-binding sites, and weak but promiscuous binding of SiaP to SiaQM.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Molecular mechanism for Rabex-5 GEF activation by Rabaptin-5

    Zhe Zhang, Tianlong Zhang ... Jianping Ding
    The GEF activity of Rabex-5 is weakly autoinhibited by its CC domain and activated by Rabaptin-5 and the two proteins work concertedly to activate Rab5.
    1. Structural Biology and Molecular Biophysics

    Promiscuous binding by Hsp70 results in conformational heterogeneity and fuzzy chaperone-substrate ensembles

    Rina Rosenzweig, Ashok Sekhar ... Lewis E Kay
    Multiple chaperone binding sites on substrates suggest a mechanism by which the Hsp70 chaperone can circumvent kinetic traps in protein folding.
    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. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Structure and transport mechanism of the sodium/proton antiporter MjNhaP1

    Cristina Paulino, David Wöhlert ... Werner Kühlbrandt
    The inward-open and outward-open structures of MjNhaP1 explain the mechanism of electroneutral sodium-proton antiport across the cell membrane.
    1. Physics of Living Systems
    2. Structural Biology and Molecular Biophysics

    Proofreading through spatial gradients

    Vahe Galstyan, Kabir Husain ... Rob Phillips
    Theoretical study shows how enzymes can achieve substrate proofreading by taking advantage of existing molecular gradients in the cell while not being endowed with structural features typically required for proofreading.

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