1,663 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Continuous transport of a small fraction of plasma membrane cholesterol to endoplasmic reticulum regulates total cellular cholesterol

    Rodney Elwood Infante, Arun Radhakrishnan
    A post-lysosomal cholesterol transport inhibitor reveals how the endoplasmic reticulum membrane regulates total cellular cholesterol by constantly monitoring a critical pool of cholesterol in the plasma membrane.
    1. Structural Biology and Molecular Biophysics

    Ternary structure of the outer membrane transporter FoxA with resolved signalling domain provides insights into TonB-mediated siderophore uptake

    Inokentijs Josts et al.
    The crystal structure of a ternary complex of a TonB-dependent transporter containing a signalling domain, bound to siderophore as well as TonB, provides mechanistic insights into siderophore uptake and signalling.
    1. Microbiology and Infectious Disease

    The Acinetobacter baumannii Mla system and glycerophospholipid transport to the outer membrane

    Cassandra Kamischke et al.
    An Acinetobacter baumannii ABC transporter likely facilitates transport of glycerophospholipids from the inner to the outer membrane.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Defining key roles for auxiliary proteins in an ABC transporter that maintains bacterial outer membrane lipid asymmetry

    Shuhua Thong et al.
    Auxiliary proteins play functional roles in modulating the assembly and activity of a non-canonical ABC transporter that is important for the maintenance of outer membrane lipid asymmetry.
    1. Cell Biology

    Uni-directional ciliary membrane protein trafficking by a cytoplasmic retrograde IFT motor and ciliary ectosome shedding

    Muqing Cao et al.
    During cilium-generated signaling, ciliary membrane protein trafficking is unidirectional and ciliary membrane protein composition is regulated through action in the cytoplasm of the retrograde intraflagelllar transport (IFT) motor and shedding of ciliary ectosomes.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    Assembling the Tat protein translocase

    Felicity Alcock et al.
    Evolutionary bioinformatics and experimentation are applied to the components of the Tat protein transport system to elucidate the structure of the membrane-bound receptor complex and to deduce a molecular description for its substrate-triggered activation.
    1. Biochemistry and Chemical Biology
    2. Structural Biology and Molecular Biophysics

    A single K+-binding site in the crystal structure of the gastric proton pump

    Kenta Yamamoto et al.
    Crystal structures provide structural rationales for the transport stoichiometry of the gastric proton pump, which suffices the energy requirement for the generation of a million-fold proton gradient across the membrane.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Single-fluorophore membrane transport activity sensors with dual-emission read-out

    Cindy Ast et al.
    Building on previous work (De Michele et al., 2013), we report the development of dual-emission AmTrac sensors for in vivo analysis of transporter activity.
    1. Cell Biology

    Dynein-mediated transport and membrane trafficking control PAR3 polarised distribution

    Julie Jouette et al.
    In Drosophila oocytes, the exclusion of the scaffold protein PAR3 from the posterior cortex depends on PAR1 and endocytosis, while its anterior localisation requires microtubules and recycling endosomes.
    1. Cell Biology

    A new family of StART domain proteins at membrane contact sites has a role in ER-PM sterol transport

    Alberto T Gatta et al.
    A new family of sterol-specific lipid transfer proteins has been found that anchors in the endoplasmic reticulum; some of these proteins stretch across membrane contacts and mediate sterol traffic from the plasma membrane.

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