299 results found
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    SEC24A deficiency lowers plasma cholesterol through reduced PCSK9 secretion

    Xiao-Wei Chen et al.
    COPII vesicles regulate the metabolism of cholesterol through the selective transport of secretory proteins.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Lysosomal membrane glycoproteins bind cholesterol and contribute to lysosomal cholesterol export

    Jian Li, Suzanne R Pfeffer
    LAMP proteins, the major glycoproteins of the lysosome membrane, bind cholesterol directly and specifically, and interact with NPC1 and NPC2 proteins as part of the lysosomal cholesterol export process.
    1. Cell Biology

    Comment on ‘Orthogonal lipid sensors identify transbilayer asymmetry of plasma membrane cholesterol’

    Kevin C Courtney et al.
    We challenge a recent report that most of the cholesterol in the plasma membrane of mammalian cells is in the exofacial leaflet.
    1. Biochemistry and Chemical Biology
    2. Neuroscience

    Mouse TRPA1 function and membrane localization are modulated by direct interactions with cholesterol

    Justyna B Startek et al.
    The activation and membrane localization of the broadly-tuned noxious chemosensory cation channel TRPA1 are regulated by direct interactions with cholesterol via CRAC motifs in transmembane segments 2 and 4.
    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. Microbiology and Infectious Disease

    Rv3723/LucA coordinates fatty acid and cholesterol uptake in Mycobacterium tuberculosis

    Evgeniya V Nazarova et al.
    The integral membrane protein LucA facilitates fatty acid and cholesterol uptake into Mycobacterium tuberculosis by stabilizing the Mce1 and Mce4 transporters, respectively, and Mce1 functions as a fatty acid transporter in Mycobacterium tuberculosis.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Lysosomal cholesterol export reconstituted from fragments of Niemann-Pick C1

    Michael Nguyen Trinh et al.
    The N-terminal domain of one NPC1 molecule can transfer its cholesterol to another NPC1 molecule lacking the N-terminal domain, suggesting that NPC1 forms multimers that transport cholesterol out of lysosomes.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Three pools of plasma membrane cholesterol and their relation to cholesterol homeostasis

    Akash Das et al.
    Precise control of cellular cholesterol levels is achieved by organization of cholesterol into three distinct pools in the plasma membrane.
    1. Biochemistry and Chemical Biology
    2. Human Biology and Medicine

    Variability of cholesterol accessibility in human red blood cells measured using a bacterial cholesterol-binding toxin

    Rima S Chakrabarti et al.
    Accessible cholesterol levels in human red blood cells were found to be stable within individuals but vary >10-fold among individuals and this variability may contribute to differences in cholesterol trafficking among tissues.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Identification of NPC1 as the target of U18666A, an inhibitor of lysosomal cholesterol export and Ebola infection

    Feiran Lu et al.
    A nanomolar inhibitor of cholesterol transport out of endosomes/lysosomes can be crosslinked to the “sterol-sensing domain” of NPC1, which implicates this domain in the transmembrane transport of cholesterol.

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