1,773 results found
    1. Structural Biology and Molecular Biophysics

    Atomistic simulations indicate the c-subunit ring of the F1Fo ATP synthase is not the mitochondrial permeability transition pore

    Wenchang Zhou, Fabrizio Marinelli ... José D Faraldo-Gómez
    The notion that the lumen of the ATP synthase membrane rotor is the long-sought megachannel that triggers the onset of the mitochondrial permeability transition is found to be inconsistent with its actual structural and functional properties.
    1. Plant Biology
    2. Structural Biology and Molecular Biophysics

    Vicia faba SV channel VfTPC1 is a hyperexcitable variant of plant vacuole Two Pore Channels

    Jinping Lu, Ingo Dreyer ... Rainer Hedrich
    Polymorphic residues of a vacuolar Ca2+ sensor site in TPC1 channels differ between species of Brassicacea and Fabaceae and lead to distinct TPC1 gating behavior.
    1. Cell Biology

    The mitochondrial permeability transition pore activates the mitochondrial unfolded protein response and promotes aging

    Suzanne Angeli, Anna Foulger ... Gordon Lithgow
    Loss of the F-ATP synthase c-subunit inhibits a pathological mitochondrial permeability transition pore that is coupled to a maladaptive mitochondrial unfolded protein response while also extending lifespan.
    1. Structural Biology and Molecular Biophysics

    Domain–domain interactions determine the gating, permeation, pharmacology, and subunit modulation of the IKs ion channel

    Mark A Zaydman, Marina A Kasimova ... Jianmin Cui
    Contrary to a generally accepted principle, the pore properties of KCNQ1 channels depend on the states of voltage-sensing domains activation; KCNE1 alters the voltage-sensing domains-pore coupling to modulate KCNQ1 channel properties.
    1. Structural Biology and Molecular Biophysics

    The Candida albicans virulence factor candidalysin polymerizes in solution to form membrane pores and damage epithelial cells

    Charles M Russell, Katherine G Schaefer ... Francisco N Barrera
    The molecular mechanism that candidalysin uses to perforate membranes is unraveled, which opens the door to the rational design of inhibitors against candidiasis.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    The AAA ATPase Vps4 binds ESCRT-III substrates through a repeating array of dipeptide-binding pockets

    Han Han, Nicole Monroe ... Christopher P Hill
    A 3.2 Å resolution structure of Vps4 provides a detailed model for protein substrate binding and translocation by AAA ATPases.
    1. Structural Biology and Molecular Biophysics

    Sterol derivative binding to the orthosteric site causes conformational changes in an invertebrate Cys-loop receptor

    Steven De Gieter, Casey I Gallagher ... Rouslan G Efremov
    Cryo-EM structures of Cys-loop receptor Alpo4 from the thermophilic worm Alvinella pompejana show that a sterol derivative CHAPS binds in and outside of its orthosteric binding site and induces a quaternary twist.
    1. Structural Biology and Molecular Biophysics

    Stepwise visualization of membrane pore formation by suilysin, a bacterial cholesterol-dependent cytolysin

    Carl Leung, Natalya V Dudkina ... Bart W Hoogenboom
    Electron and atomic force microscopy show how bacterial toxins bind to a host membrane and assemble into arcs and rings, before undergoing a dramatic, concerted conformational change to insert into the membrane.
    1. Cell Biology
    2. Immunology and Inflammation

    T-cell receptor (TCR) signaling promotes the assembly of RanBP2/RanGAP1-SUMO1/Ubc9 nuclear pore subcomplex via PKC-θ-mediated phosphorylation of RanGAP1

    Yujiao He, Zhiguo Yang ... Yingqiu Li
    T-cell receptor signaling actively regulates gating of the nuclear pore complex (NPC) in T cells by inducing translocation of protein kinase C-θ to the NPC to promote the sumoylation of RanGAP1.
    1. Structural Biology and Molecular Biophysics

    Isoleucine gate blocks K+ conduction in C-type inactivation

    Werner Treptow, Yichen Liu ... Benoit Roux
    The conformation of an isoleucine gate located along the TM6 segment on the intracellular side below the selectivity filter is a critical component leading to a non-conductive state in the C-type inactivation process of K+ channels.

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