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基本情報
登録情報 | データベース: PDB / ID: 8adu | |||||||||||||||
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タイトル | Lipidic alpha-synuclein fibril - polymorph L1A | |||||||||||||||
![]() | Alpha-synuclein | |||||||||||||||
![]() | PROTEIN FIBRIL / amyloid fibril | |||||||||||||||
機能・相同性 | ![]() negative regulation of mitochondrial electron transport, NADH to ubiquinone / : / neutral lipid metabolic process / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / response to desipramine / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber ...negative regulation of mitochondrial electron transport, NADH to ubiquinone / : / neutral lipid metabolic process / regulation of acyl-CoA biosynthetic process / negative regulation of dopamine uptake involved in synaptic transmission / negative regulation of norepinephrine uptake / response to desipramine / positive regulation of SNARE complex assembly / positive regulation of hydrogen peroxide catabolic process / supramolecular fiber / mitochondrial membrane organization / regulation of synaptic vesicle recycling / negative regulation of chaperone-mediated autophagy / regulation of reactive oxygen species biosynthetic process / negative regulation of platelet-derived growth factor receptor signaling pathway / positive regulation of protein localization to cell periphery / negative regulation of exocytosis / regulation of glutamate secretion / dopamine biosynthetic process / SNARE complex assembly / regulation of norepinephrine uptake / response to iron(II) ion / positive regulation of neurotransmitter secretion / positive regulation of inositol phosphate biosynthetic process / regulation of locomotion / negative regulation of dopamine metabolic process / regulation of macrophage activation / transporter regulator activity / negative regulation of microtubule polymerization / synaptic vesicle transport / synaptic vesicle priming / dopamine uptake involved in synaptic transmission / protein kinase inhibitor activity / mitochondrial ATP synthesis coupled electron transport / regulation of dopamine secretion / dynein complex binding / positive regulation of receptor recycling / negative regulation of thrombin-activated receptor signaling pathway / cuprous ion binding / nuclear outer membrane / response to magnesium ion / positive regulation of endocytosis / positive regulation of exocytosis / synaptic vesicle exocytosis / kinesin binding / enzyme inhibitor activity / synaptic vesicle endocytosis / cysteine-type endopeptidase inhibitor activity / negative regulation of serotonin uptake / response to type II interferon / regulation of presynapse assembly / alpha-tubulin binding / beta-tubulin binding / behavioral response to cocaine / phospholipase binding / supramolecular fiber organization / phospholipid metabolic process / cellular response to fibroblast growth factor stimulus / inclusion body / axon terminus / Hsp70 protein binding / cellular response to epinephrine stimulus / response to interleukin-1 / regulation of microtubule cytoskeleton organization / cellular response to copper ion / positive regulation of release of sequestered calcium ion into cytosol / SNARE binding / adult locomotory behavior / excitatory postsynaptic potential / phosphoprotein binding / protein tetramerization / microglial cell activation / fatty acid metabolic process / ferrous iron binding / regulation of long-term neuronal synaptic plasticity / synapse organization / protein destabilization / PKR-mediated signaling / phospholipid binding / receptor internalization / tau protein binding / long-term synaptic potentiation / terminal bouton / positive regulation of inflammatory response / synaptic vesicle membrane / actin cytoskeleton / actin binding / growth cone / cellular response to oxidative stress / neuron apoptotic process / cell cortex / histone binding / response to lipopolysaccharide / microtubule binding / molecular adaptor activity / chemical synaptic transmission / amyloid fibril formation / mitochondrial outer membrane / negative regulation of neuron apoptotic process / oxidoreductase activity 類似検索 - 分子機能 | |||||||||||||||
生物種 | ![]() | |||||||||||||||
手法 | 電子顕微鏡法 / らせん対称体再構成法 / クライオ電子顕微鏡法 / 解像度: 3.24 Å | |||||||||||||||
![]() | Frieg, B. / Antonschmidt, L. / Dienemann, C. / Geraets, J.A. / Najbauer, E.E. / Matthes, D. / de Groot, B.L. / Andreas, L.B. / Becker, S. / Griesinger, C. / Schroeder, G.F. | |||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: The 3D structure of lipidic fibrils of α-synuclein. 著者: Benedikt Frieg / Leif Antonschmidt / Christian Dienemann / James A Geraets / Eszter E Najbauer / Dirk Matthes / Bert L de Groot / Loren B Andreas / Stefan Becker / Christian Griesinger / Gunnar F Schröder / ![]() 要旨: α-synuclein misfolding and aggregation into fibrils is a common feature of α-synucleinopathies, such as Parkinson's disease, in which α-synuclein fibrils are a characteristic hallmark of neuronal ...α-synuclein misfolding and aggregation into fibrils is a common feature of α-synucleinopathies, such as Parkinson's disease, in which α-synuclein fibrils are a characteristic hallmark of neuronal inclusions called Lewy bodies. Studies on the composition of Lewy bodies extracted postmortem from brain tissue of Parkinson's patients revealed that lipids and membranous organelles are also a significant component. Interactions between α-synuclein and lipids have been previously identified as relevant for Parkinson's disease pathology, however molecular insights into their interactions have remained elusive. Here we present cryo-electron microscopy structures of six α-synuclein fibrils in complex with lipids, revealing specific lipid-fibril interactions. We observe that phospholipids promote an alternative protofilament fold, mediate an unusual arrangement of protofilaments, and fill the central cavities of the fibrils. Together with our previous studies, these structures also indicate a mechanism for fibril-induced lipid extraction, which is likely to be involved in the development of α-synucleinopathies. Specifically, one potential mechanism for the cellular toxicity is the disruption of intracellular vesicles mediated by fibrils and oligomers, and therefore the modulation of these interactions may provide a promising strategy for future therapeutic interventions. | |||||||||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 89.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 65.2 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1.1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.1 MB | 表示 | |
XML形式データ | ![]() | 26.5 KB | 表示 | |
CIF形式データ | ![]() | 40.6 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 15370MC ![]() 8a4lC ![]() 8adsC ![]() 8advC ![]() 8adwC ![]() 8aexC C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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非結晶学的対称性 (NCS) | NCSドメイン:
NCSドメイン領域: Component-ID: 1 / Ens-ID: ens_1 / Beg auth comp-ID: MET / Beg label comp-ID: MET / End auth comp-ID: GLN / End label comp-ID: GLN / Auth seq-ID: 1 - 99 / Label seq-ID: 1 - 99
NCS oper:
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要素
#1: タンパク質 | 分子量: 14476.108 Da / 分子数: 5 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: FILAMENT / 3次元再構成法: らせん対称体再構成法 |
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試料調製
構成要素 | 名称: Lipidic alpha-synuclein fibril - polymorph L1A / タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.4 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 500 nm |
撮影 | 電子線照射量: 42.72 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
ソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||
らせん対称 | 回転角度/サブユニット: -0.95 ° / 軸方向距離/サブユニット: 4.69 Å / らせん対称軸の対称性: C1 | ||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.24 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 13641 / 対称性のタイプ: HELICAL | ||||||||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 60.81 Å2 | ||||||||||||||||||||||||||||||
拘束条件 |
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