- EMDB-8910: Cryo-EM structure of murine AA amyloid fibril -
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基本情報
登録情報
データベース: EMDB / ID: EMD-8910
タイトル
Cryo-EM structure of murine AA amyloid fibril
マップデータ
Cryo-EM reconstruction of murine Serum Amyloid A fibrils from diseased mouse spleen using Relion 2.1. The central 30% of the reconstruction is shown.
試料
複合体: AA amyloid fibril
タンパク質・ペプチド: Serum amyloid A-2 protein
キーワード
AA-amyloidosis / fibril / cross-beta / helical / PROTEIN FIBRIL
機能・相同性
Serum amyloid A protein / : / Serum amyloid A protein / Serum amyloid A proteins signature. / Serum amyloid A proteins / response to stilbenoid / high-density lipoprotein particle / acute-phase response / Serum amyloid A-2 protein
ジャーナル: Nat Commun / 年: 2019 タイトル: Cryo-EM fibril structures from systemic AA amyloidosis reveal the species complementarity of pathological amyloids. 著者: Falk Liberta / Sarah Loerch / Matthies Rennegarbe / Angelika Schierhorn / Per Westermark / Gunilla T Westermark / Bouke P C Hazenberg / Nikolaus Grigorieff / Marcus Fändrich / Matthias Schmidt / 要旨: Systemic AA amyloidosis is a worldwide occurring protein misfolding disease of humans and animals. It arises from the formation of amyloid fibrils from the acute phase protein serum amyloid A. Here, ...Systemic AA amyloidosis is a worldwide occurring protein misfolding disease of humans and animals. It arises from the formation of amyloid fibrils from the acute phase protein serum amyloid A. Here, we report the purification and electron cryo-microscopy analysis of amyloid fibrils from a mouse and a human patient with systemic AA amyloidosis. The obtained resolutions are 3.0 Å and 2.7 Å for the murine and human fibril, respectively. The two fibrils differ in fundamental properties, such as presence of right-hand or left-hand twisted cross-β sheets and overall fold of the fibril proteins. Yet, both proteins adopt highly similar β-arch conformations within the N-terminal ~21 residues. Our data demonstrate the importance of the fibril protein N-terminus for the stability of the analyzed amyloid fibril morphologies and suggest strategies of combating this disease by interfering with specific fibril polymorphs.
EMPIAR-10825 (タイトル: Cryo electron microscopy of ex-vivo murine SAA amyloid fibrils Data size: 533.9 Data #1: Unaligned multiframe micrographs of ex-vivo murine SAA1 [micrographs - multiframe])