855 results found
    1. Biochemistry and Chemical Biology

    Ribosomes slide on lysine-encoding homopolymeric A stretches

    Kristin S Koutmou et al.
    Ribosomes undergo an unanticipated movement (‘sliding’) while translating homopolymeric A sequences, which provides a biochemical rationale for the observation that iterated AAA codons are under-represented in gene-coding sequences.
    1. Structural Biology and Molecular Biophysics
    2. Cell Biology

    Mapping translation 'hot-spots' in live cells by tracking single molecules of mRNA and ribosomes

    Zachary B Katz et al.
    A method that involves simultaneous tracking of individual mRNAs and their associated ribosomes can be used to determine when and where individual molecules get translated in living cells.
    1. Biochemistry and Chemical Biology

    Intracellular Diffusion: How bacteria keep proteins moving

    Conrad W Mullineaux
    Bacteria contain large numbers of negatively-charged proteins to avoid the electrostatic interactions with ribosomes that would dramatically reduce protein diffusion.
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    1. Cell Biology
    2. Computational and Systems Biology

    Principles of cellular resource allocation revealed by condition-dependent proteome profiling

    Eyal Metzl-Raz et al.
    Steadily growing cells prepare for conditions that demand increased translation by producing excess ribosomes, at the expense of lower steady-state growth rate.
    1. Cell Biology
    2. Computational and Systems Biology

    Deciphering anomalous heterogeneous intracellular transport with neural networks

    Daniel Han et al.
    Direct estimation of the Hurst exponent shows that endosomes and lysosomes reside in regimes of persistent and anti-persistent motion with heavy-tailed residence time distributions and motion correlated with endocytic function.
    1. Biochemistry and Chemical Biology
    2. Cell Biology

    Identification of a transporter complex responsible for the cytosolic entry of nitrogen-containing bisphosphonates

    Zhou Yu et al.
    Identification of a transporter complex comprised of SLC37A3 and ATRAID is required for nitrogen-containing bisphosphonates to enter the cytosol from lysosomes and exert their therapeutic effects on bone.
    1. Biochemistry and Chemical Biology

    Ribosome surface properties may impose limits on the nature of the cytoplasmic proteome

    Paul E Schavemaker et al.
    The diffusion coefficients of proteins in the cytoplasm depend on their net charge and the distribution of charge over the protein surface, with positive proteins moving up to 100-fold slower because they bind to ribosomes.
    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.
    1. Genetics and Genomics

    The endonuclease Cue2 cleaves mRNAs at stalled ribosomes during No Go Decay

    Karole N D'Orazio et al.
    Cue2 is an endonuclease that cleaves mRNA in the A site of the lagging ribosome upon ribosome collision events.
    1. Cell Biology
    2. Neuroscience

    Active presynaptic ribosomes in the mammalian brain, and altered transmitter release after protein synthesis inhibition

    Matthew S Scarnati et al.
    Local presynaptic protein synthesis occurring at established nerve terminals in the mammalian brain provides a mechanism for rapidly controlling or restoring presynaptic proteins that affect neurotransmitter release and presynaptic efficiency.

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