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基本情報
登録情報 | データベース: PDB / ID: 8byp | |||||||||
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タイトル | Botulinum neurotoxin serotype X in complex with NTNH/X | |||||||||
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![]() | TOXIN / Botulinum neurotoxin / botulism | |||||||||
機能・相同性 | ![]() bontoxilysin / host cell presynaptic membrane / host cell cytoplasmic vesicle / host cell cytosol / protein transmembrane transporter activity / metalloendopeptidase activity / toxin activity / host cell plasma membrane / proteolysis / extracellular region ...bontoxilysin / host cell presynaptic membrane / host cell cytoplasmic vesicle / host cell cytosol / protein transmembrane transporter activity / metalloendopeptidase activity / toxin activity / host cell plasma membrane / proteolysis / extracellular region / zinc ion binding / membrane 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() | |||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.12 Å | |||||||||
![]() | Martinez-Carranza, M. / Skerlova, J. / Stenmark, P. | |||||||||
資金援助 | European Union, 1件
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![]() | ![]() タイトル: Activity of botulinum neurotoxin X and its structure when shielded by a non-toxic non-hemagglutinin protein. 著者: Markel Martínez-Carranza / Jana Škerlová / Pyung-Gang Lee / Jie Zhang / Ajda Krč / Abhishek Sirohiwal / Dave Burgin / Mark Elliott / Jules Philippe / Sarah Donald / Fraser Hornby / Linda ...著者: Markel Martínez-Carranza / Jana Škerlová / Pyung-Gang Lee / Jie Zhang / Ajda Krč / Abhishek Sirohiwal / Dave Burgin / Mark Elliott / Jules Philippe / Sarah Donald / Fraser Hornby / Linda Henriksson / Geoffrey Masuyer / Ville R I Kaila / Matthew Beard / Min Dong / Pål Stenmark / ![]() ![]() ![]() 要旨: Botulinum neurotoxins (BoNTs) are the most potent toxins known and are used to treat an increasing number of medical disorders. All BoNTs are naturally co-expressed with a protective partner protein ...Botulinum neurotoxins (BoNTs) are the most potent toxins known and are used to treat an increasing number of medical disorders. All BoNTs are naturally co-expressed with a protective partner protein (NTNH) with which they form a 300 kDa complex, to resist acidic and proteolytic attack from the digestive tract. We have previously identified a new botulinum neurotoxin serotype, BoNT/X, that has unique and therapeutically attractive properties. We present the cryo-EM structure of the BoNT/X-NTNH/X complex and the crystal structure of the isolated NTNH protein. Unexpectedly, the BoNT/X complex is stable and protease-resistant at both neutral and acidic pH and disassembles only in alkaline conditions. Using the stabilizing effect of NTNH, we isolated BoNT/X and showed that it has very low potency both in vitro and in vivo. Given the high catalytic activity and translocation efficacy of BoNT/X, low activity of the full toxin is likely due to the receptor-binding domain, which presents very weak ganglioside binding and exposed hydrophobic surfaces. #1: ジャーナル: bioRxiv / 年: 2023 タイトル: Structure and activity of botulinum neurotoxin X. 著者: Markel Martínez-Carranza / Jana Škerlová / Pyung-Gang Lee / Jie Zhang / Dave Burgin / Mark Elliott / Jules Philippe / Sarah Donald / Fraser Hornby / Linda Henriksson / Geoffrey Masuyer / ...著者: Markel Martínez-Carranza / Jana Škerlová / Pyung-Gang Lee / Jie Zhang / Dave Burgin / Mark Elliott / Jules Philippe / Sarah Donald / Fraser Hornby / Linda Henriksson / Geoffrey Masuyer / Matthew Beard / Min Dong / Pål Stenmark 要旨: Botulinum neurotoxins (BoNTs) are the most potent toxins known and are used to treat an increasing number of medical disorders. All BoNTs are naturally co-expressed with a protective partner protein ...Botulinum neurotoxins (BoNTs) are the most potent toxins known and are used to treat an increasing number of medical disorders. All BoNTs are naturally co-expressed with a protective partner protein (NTNH) with which they form a 300 kDa complex, to resist acidic and proteolytic attack from the digestive tract. We have previously identified a new botulinum neurotoxin serotype, BoNT/X, that has unique and therapeutically attractive properties. We present the cryo-EM structure of the BoNT/X-NTNH/X complex at 3.1 Å resolution. Unexpectedly, the BoNT/X complex is stable and protease resistant at both neutral and acidic pH and disassembles only in alkaline conditions. Using the stabilizing effect of NTNH, we isolated BoNT/X and showed that it has very low potency both and . Given the high catalytic activity and translocation efficacy of BoNT/X, low activity of the full toxin is likely due to the receptor-binding domain, which presents weak ganglioside binding and exposed hydrophobic surfaces. | |||||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 442.9 KB | 表示 | ![]() |
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PDB形式 | ![]() | 357.6 KB | 表示 | ![]() |
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-検証レポート
文書・要旨 | ![]() | 1.5 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.6 MB | 表示 | |
XML形式データ | ![]() | 75.9 KB | 表示 | |
CIF形式データ | ![]() | 114.4 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 | ![]() 16330MC ![]() 8qftC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 ( |
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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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要素
#1: タンパク質 | 分子量: 137394.984 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() |
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#2: タンパク質 | 分子量: 150348.891 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 遺伝子: CBB2_0680 / 発現宿主: ![]() ![]() |
Has protein modification | Y |
-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: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 | 名称: Botulinum neurotoxin serotype X in complex with NTNH/X タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 値: 0.3 MDa / 実験値: YES |
由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 5.5 |
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): 3000 nm / 最小 デフォーカス(公称値): 500 nm |
撮影 | 電子線照射量: 40 e/Å2 / 検出モード: COUNTING フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||
3次元再構成 | 解像度: 3.12 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 432063 / 対称性のタイプ: POINT | ||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT |