162 results found
    1. Cell Biology

    Niemann-Pick type C proteins promote microautophagy by expanding raft-like membrane domains in the yeast vacuole

    Takuma Tsuji et al.
    Sterol transport by Niemann-Pick type C proteins induces the expansion of raft-like domains in the yeast vacuole, enabling engulfment of lipid droplets by microautophagy.
    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. Biochemistry and Chemical Biology
    2. Cell Biology

    Inter-domain dynamics drive cholesterol transport by NPC1 and NPC1L1 proteins

    Piyali Saha et al.
    Molecular analysis of cholesterol transport by NPC1 and NPC1L1 proteins reveals that cholesterol likely moves through these transporters, and ezetimibe blocks NPC1L1 by binding at the interface between multiple domains.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Intracellular cholesterol trafficking is dependent upon NPC2 interaction with lysobisphosphatidic acid

    Leslie A McCauliff et al.
    Sterol kinetics and cell-based assays reveal a heretofore unknown step in cholesterol trafficking through the endolysosomal compartment, involving a direct functional interaction between NPC2 and lysosbisphosphatidic acid.
    1. Cell Biology

    Intracellular sphingosine releases calcium from lysosomes

    Doris Höglinger et al.
    Sphingosine acts as a lipid messenger molecule in intracellular signaling networks that are relevant to lysosomal function and Niemann-Pick disease.
    1. Ecology
    2. Evolutionary Biology

    Point of View: Towards a mechanistic foundation of evolutionary theory

    Michael Doebeli et al.
    A description of evolution that is based on birth-death processes, and in which fitness is at most a derived quantity, is advocated.
    1. Immunology and Inflammation
    2. Neuroscience

    Differential accumulation of storage bodies with aging defines discrete subsets of microglia in the healthy brain

    Jeremy Carlos Burns et al.
    Two novel subsets of microglia identified by their unique autofluorescence profiles differ in their subcellular organization, proteomic signatures and in their response to aging and lysosomal dysfunction.
    1. Biochemistry and Chemical Biology
    2. Microbiology and Infectious Disease

    Cretaceous dinosaur bone contains recent organic material and provides an environment conducive to microbial communities

    Evan T Saitta et al.
    Subterranean fossil bone hosts a living microbiome different from the surrounding sediment without evidence of original protein preservation.
    1. Neuroscience

    Balancing model-based and memory-free action selection under competitive pressure

    Atsushi Kikumoto, Ulrich Mayr
    People compete by trying to outsmart their opponents as long as they win, but show random behavior, and neural signs of suppressing knowledge about opponents’ strategies, when they lose.
    1. Cell Biology
    2. Developmental Biology

    Cholesterol accessibility at the ciliary membrane controls hedgehog signaling

    Maia Kinnebrew et al.
    The patched hedgehog receptor inhibits the transmembrane transducer smoothened by reducing the accessibility of cholesterol locally at the membrane of the primary cilium.

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