Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / negative regulation of amyloid precursor protein catabolic process / lamin binding / regulation of glutamate receptor signaling pathway / regulation of calcium ion import across plasma membrane / aspartic-type endopeptidase inhibitor activity / glycosaminoglycan binding / ATP-dependent protein binding / regulation of potassium ion transmembrane transport / negative regulation of interleukin-17 production ...Insertion of tail-anchored proteins into the endoplasmic reticulum membrane / negative regulation of amyloid precursor protein catabolic process / lamin binding / regulation of glutamate receptor signaling pathway / regulation of calcium ion import across plasma membrane / aspartic-type endopeptidase inhibitor activity / glycosaminoglycan binding / ATP-dependent protein binding / regulation of potassium ion transmembrane transport / negative regulation of interleukin-17 production / negative regulation of dendritic spine maintenance / type 5 metabotropic glutamate receptor binding / cupric ion binding / nucleobase-containing compound metabolic process / response to copper ion / negative regulation of calcineurin-NFAT signaling cascade / negative regulation of interleukin-2 production / negative regulation of T cell receptor signaling pathway / activation of protein kinase activity / cuprous ion binding / negative regulation of amyloid-beta formation / negative regulation of activated T cell proliferation / response to amyloid-beta / : / negative regulation of type II interferon production / negative regulation of long-term synaptic potentiation / intracellular copper ion homeostasis / positive regulation of protein targeting to membrane / side of membrane / response to cadmium ion / regulation of peptidyl-tyrosine phosphorylation / inclusion body / cellular response to copper ion / neuron projection maintenance / negative regulation of protein phosphorylation / molecular condensate scaffold activity / molecular function activator activity / positive regulation of protein localization to plasma membrane / protein destabilization / protein homooligomerization / negative regulation of DNA-binding transcription factor activity / terminal bouton / cellular response to amyloid-beta / regulation of protein localization / positive regulation of peptidyl-tyrosine phosphorylation / positive regulation of neuron apoptotic process / cellular response to xenobiotic stimulus / signaling receptor activity / amyloid-beta binding / protein-folding chaperone binding / microtubule binding / nuclear membrane / protease binding / response to oxidative stress / transmembrane transporter binding / molecular adaptor activity / postsynaptic density / learning or memory / membrane raft / copper ion binding / dendrite / protein-containing complex binding / negative regulation of apoptotic process / Golgi apparatus / cell surface / endoplasmic reticulum / identical protein binding / membrane / metal ion binding / plasma membrane / cytosol Similarity search - Function
Prion protein signature 1. / Prion protein signature 2. / Major prion protein N-terminal domain / Major prion protein bPrPp - N terminal / Prion protein / Major prion protein / Prion/Doppel protein, beta-ribbon domain / Prion/Doppel beta-ribbon domain superfamily / Prion/Doppel alpha-helical domain Similarity search - Domain/homology
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
A1000580
Other private
Citation
Journal: Mol Cell / Year: 2021 Title: High-resolution structure and strain comparison of infectious mammalian prions. Authors: Allison Kraus / Forrest Hoyt / Cindi L Schwartz / Bryan Hansen / Efrosini Artikis / Andrew G Hughson / Gregory J Raymond / Brent Race / Gerald S Baron / Byron Caughey / Abstract: Within the extensive range of self-propagating pathologic protein aggregates of mammals, prions are the most clearly infectious (e.g., ∼10 lethal doses per milligram). The structures of such lethal ...Within the extensive range of self-propagating pathologic protein aggregates of mammals, prions are the most clearly infectious (e.g., ∼10 lethal doses per milligram). The structures of such lethal assemblies of PrP molecules have been poorly understood. Here we report a near-atomic core structure of a brain-derived, fully infectious prion (263K strain). Cryo-electron microscopy showed amyloid fibrils assembled with parallel in-register intermolecular β sheets. Each monomer provides one rung of the ordered fibril core, with N-linked glycans and glycolipid anchors projecting outward. Thus, single monomers form the templating surface for incoming monomers at fibril ends, where prion growth occurs. Comparison to another prion strain (aRML) revealed major differences in fibril morphology but, like 263K, an asymmetric fibril cross-section without paired protofilaments. These findings provide structural insights into prion propagation, strains, species barriers, and membrane pathogenesis. This structure also helps frame considerations of factors influencing the relative transmissibility of other pathologic amyloids.
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