2,869 results found
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Divergent Cl- and H+ pathways underlie transport coupling and gating in CLC exchangers and channels

    Lilia Leisle et al.
    Combined simulations and electrophysiological experiments show that the CLC channels and exchangers form physically distinct and evolutionarily conserved pathways through which Cl- and H+ ions move when crossing biological membranes.
    1. Structural Biology and Molecular Biophysics

    A CLC-ec1 mutant reveals global conformational change and suggests a unifying mechanism for the CLC Cl/H+ transport cycle

    Tanmay S Chavan et al.
    Crystallography together with electron-resonance spectroscopy, molecular-dynamics simulations, and transport measurements reveal the molecular details of protein conformational change, and how this change contributes to function in a CLC-type chloride/proton exchanger.
    1. Structural Biology and Molecular Biophysics

    Revealing an outward-facing open conformational state in a CLC Cl/H+ exchange transporter

    Chandra M Khantwal et al.
    The characterization of a previously unidentified “outward-facing open” conformational state provides a new framework for understanding the CLC transport mechanism.
    1. Cell Biology

    Conformation of the nuclear pore in living cells is modulated by transport state

    Joan Pulupa et al.
    Polarized fluorescence microscopy of individual nuclear pores in vivo reveals conformational changes in select domains of proteins of the inner ring.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    pH- and sodium-induced changes in a sodium/proton antiporter

    Cristina Paulino, Werner Kühlbrandt
    Sodium ions but not protons induce defined helix movements in a sodium/proton antiporter and suggest a mechanism for Na + binding and transport.
    1. Cell Biology

    The yeast H+-ATPase Pma1 promotes Rag/Gtr-dependent TORC1 activation in response to H+-coupled nutrient uptake

    Elie Saliba et al.
    The H+ influx coupled to nutrient uptake and the plasma membrane H+-ATPase are central actors of the activation of target of rapamycin complex 1 (TORC1) in budding yeast Saccharomyces cerevisiae..
    1. Cell Biology

    Selective clearance of the inner nuclear membrane protein emerin by vesicular transport during ER stress

    Abigail Buchwalter et al.
    Emerin, a protein that plays key roles in nuclear organization, can be dynamically degraded in response to environmental stimuli such as ER stress.
    1. Cell Biology

    Starvation-induced regulation of carbohydrate transport at the blood–brain barrier is TGF-β-signaling dependent

    Helen Hertenstein et al.
    Detailed analysis of transporter expression and glucose uptake rates shows that carbohydrate import at the blood–brain barrier is adapted via TGF-βsignaling-dependent transcriptional regulation of carbohydrate transporters to protect the brain form effects of nutrient shortage.
    1. Structural Biology and Molecular Biophysics

    Cryo-EM structures of human ZnT8 in both outward- and inward-facing conformations

    Jing Xue et al.
    Cryo-EM analysis of human ZnT8 reveals a large conformational change of TMD during the transport cycle.
    1. Structural Biology and Molecular Biophysics

    Structure of the CLC-1 chloride channel from Homo sapiens

    Eunyong Park, Roderick MacKinnon
    A cryo-electron microscopy study of the human CLC-1 chloride ion channel reveals the structural basis of why some CLC proteins function as passive chloride channels whereas others function as an active proton-chloride antiporters.

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