- EMDB-16886: Structure of the Fmoc-Tau-PAM4 Type 4 amyloid fibril -
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基本情報
登録情報
データベース: EMDB / ID: EMD-16886
タイトル
Structure of the Fmoc-Tau-PAM4 Type 4 amyloid fibril
マップデータ
Final postprocessed, sharpened, helical symmetrised map of the Fmoc-TauPAM4 fibril morphology IIb
試料
複合体: Amyloid fibril form 2b of Tau-PAM4 peptide adducted with the Fmoc protection group
タンパク質・ペプチド: Microtubule-associated protein tau
キーワード
amyloid / tau / helical / cross-beta / fibril / neurodegeneration / Fmoc / PROTEIN FIBRIL
機能・相同性
機能・相同性情報
plus-end-directed organelle transport along microtubule / histone-dependent DNA binding / negative regulation of establishment of protein localization to mitochondrion / neurofibrillary tangle / microtubule lateral binding / axonal transport / tubulin complex / positive regulation of protein localization to synapse / negative regulation of tubulin deacetylation / phosphatidylinositol bisphosphate binding ...plus-end-directed organelle transport along microtubule / histone-dependent DNA binding / negative regulation of establishment of protein localization to mitochondrion / neurofibrillary tangle / microtubule lateral binding / axonal transport / tubulin complex / positive regulation of protein localization to synapse / negative regulation of tubulin deacetylation / phosphatidylinositol bisphosphate binding / generation of neurons / rRNA metabolic process / axonal transport of mitochondrion / regulation of mitochondrial fission / axon development / regulation of chromosome organization / central nervous system neuron development / intracellular distribution of mitochondria / minor groove of adenine-thymine-rich DNA binding / lipoprotein particle binding / microtubule polymerization / negative regulation of mitochondrial membrane potential / regulation of microtubule polymerization / dynactin binding / apolipoprotein binding / main axon / protein polymerization / axolemma / glial cell projection / Caspase-mediated cleavage of cytoskeletal proteins / regulation of microtubule polymerization or depolymerization / negative regulation of mitochondrial fission / neurofibrillary tangle assembly / positive regulation of axon extension / regulation of cellular response to heat / Activation of AMPK downstream of NMDARs / positive regulation of superoxide anion generation / synapse assembly / regulation of long-term synaptic depression / supramolecular fiber organization / positive regulation of protein localization / cellular response to brain-derived neurotrophic factor stimulus / regulation of calcium-mediated signaling / cytoplasmic microtubule organization / positive regulation of microtubule polymerization / somatodendritic compartment / axon cytoplasm / astrocyte activation / stress granule assembly / phosphatidylinositol binding / nuclear periphery / regulation of microtubule cytoskeleton organization / protein phosphatase 2A binding / cellular response to reactive oxygen species / Hsp90 protein binding / microglial cell activation / synapse organization / cellular response to nerve growth factor stimulus / protein homooligomerization / PKR-mediated signaling / regulation of synaptic plasticity / SH3 domain binding / response to lead ion / microtubule cytoskeleton organization / memory / cytoplasmic ribonucleoprotein granule / neuron projection development / cell-cell signaling / single-stranded DNA binding / protein-folding chaperone binding / cellular response to heat / actin binding / microtubule cytoskeleton / cell body / growth cone / double-stranded DNA binding / protein-macromolecule adaptor activity / microtubule binding / dendritic spine / sequence-specific DNA binding / amyloid fibril formation / microtubule / learning or memory / neuron projection / regulation of autophagy / membrane raft / axon / negative regulation of gene expression / neuronal cell body / dendrite / DNA damage response / protein kinase binding / enzyme binding / mitochondrion / DNA binding / RNA binding / extracellular region / identical protein binding / nucleus / plasma membrane 類似検索 - 分子機能
Microtubule-associated protein Tau / Microtubule associated protein, tubulin-binding repeat / Tau and MAP protein, tubulin-binding repeat / Tau and MAP proteins tubulin-binding repeat signature. / Tau and MAP proteins tubulin-binding repeat profile. / : 類似検索 - ドメイン・相同性
ジャーナル: Nat Commun / 年: 2024 タイトル: Local structural preferences in shaping tau amyloid polymorphism. 著者: Nikolaos Louros / Martin Wilkinson / Grigoria Tsaka / Meine Ramakers / Chiara Morelli / Teresa Garcia / Rodrigo Gallardo / Sam D'Haeyer / Vera Goossens / Dominique Audenaert / Dietmar Rudolf ...著者: Nikolaos Louros / Martin Wilkinson / Grigoria Tsaka / Meine Ramakers / Chiara Morelli / Teresa Garcia / Rodrigo Gallardo / Sam D'Haeyer / Vera Goossens / Dominique Audenaert / Dietmar Rudolf Thal / Ian R Mackenzie / Rosa Rademakers / Neil A Ranson / Sheena E Radford / Frederic Rousseau / Joost Schymkowitz / 要旨: Tauopathies encompass a group of neurodegenerative disorders characterised by diverse tau amyloid fibril structures. The persistence of polymorphism across tauopathies suggests that distinct ...Tauopathies encompass a group of neurodegenerative disorders characterised by diverse tau amyloid fibril structures. The persistence of polymorphism across tauopathies suggests that distinct pathological conditions dictate the adopted polymorph for each disease. However, the extent to which intrinsic structural tendencies of tau amyloid cores contribute to fibril polymorphism remains uncertain. Using a combination of experimental approaches, we here identify a new amyloidogenic motif, PAM4 (Polymorphic Amyloid Motif of Repeat 4), as a significant contributor to tau polymorphism. Calculation of per-residue contributions to the stability of the fibril cores of different pathologic tau structures suggests that PAM4 plays a central role in preserving structural integrity across amyloid polymorphs. Consistent with this, cryo-EM structural analysis of fibrils formed from a synthetic PAM4 peptide shows that the sequence adopts alternative structures that closely correspond to distinct disease-associated tau strains. Furthermore, in-cell experiments revealed that PAM4 deletion hampers the cellular seeding efficiency of tau aggregates extracted from Alzheimer's disease, corticobasal degeneration, and progressive supranuclear palsy patients, underscoring PAM4's pivotal role in these tauopathies. Together, our results highlight the importance of the intrinsic structural propensity of amyloid core segments to determine the structure of tau in cells, and in propagating amyloid structures in disease.
全体 : Amyloid fibril form 2b of Tau-PAM4 peptide adducted with the Fmoc...
全体
名称: Amyloid fibril form 2b of Tau-PAM4 peptide adducted with the Fmoc protection group
要素
複合体: Amyloid fibril form 2b of Tau-PAM4 peptide adducted with the Fmoc protection group
タンパク質・ペプチド: Microtubule-associated protein tau
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超分子 #1: Amyloid fibril form 2b of Tau-PAM4 peptide adducted with the Fmoc...
超分子
名称: Amyloid fibril form 2b of Tau-PAM4 peptide adducted with the Fmoc protection group タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all / 詳細: Synthesised peptide assembled into amyloid fibril
由来(天然)
生物種: Homo sapiens (ヒト)
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分子 #1: Microtubule-associated protein tau
分子
名称: Microtubule-associated protein tau / タイプ: protein_or_peptide / ID: 1 詳細: 13-residue peptide of the PAM4 motif of Tau, corresponding to residues 350-362 of the Tau repeat domain. The peptide is C-terminally amidated and should be N-terminally acetylated, however ...詳細: 13-residue peptide of the PAM4 motif of Tau, corresponding to residues 350-362 of the Tau repeat domain. The peptide is C-terminally amidated and should be N-terminally acetylated, however 10% (by mass spec) still adducted to Fmoc protection group used in synthesis. the Fmoc-peptide form dominated the fibril assembly. コピー数: 24 / 光学異性体: LEVO
由来(天然)
生物種: Homo sapiens (ヒト)
分子量
理論値: 1.652269 KDa
配列
文字列:
(VP1)VQSKIGSLD NITH(NH2)
UniProtKB: Microtubule-associated protein tau
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実験情報
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構造解析
手法
クライオ電子顕微鏡法
解析
らせん対称体再構成法
試料の集合状態
filament
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試料調製
濃度
0.6 mg/mL
緩衝液
pH: 7 詳細: Peptide resuspended in MilliQ water for aggregation reaction