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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 9efg | |||||||||||||||||||||||||||||||||
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タイトル | VIP3Cb1 Toxin structure | |||||||||||||||||||||||||||||||||
![]() | VIP3Cb1 Toxin | |||||||||||||||||||||||||||||||||
![]() | TOXIN / Tetramer / Lepidopteran | |||||||||||||||||||||||||||||||||
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: 3.04 Å | |||||||||||||||||||||||||||||||||
![]() | Rau, M.J. / Rydel, T. / Zheng, M. / White, T. | |||||||||||||||||||||||||||||||||
資金援助 | 1件
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![]() | ![]() タイトル: Vip3C proteins from spp. for controlling lepidopteran crop pests. 著者: Todd Ciche / William Moar / Aqeel Ahmad / David Bowen / Catherine Chay / Arlene Howe / Uma Kesanapalli / Jennifer Lutke / Gregory Bean / Jason Milligan / Michael Pleau / Yong Yin / Waseem ...著者: Todd Ciche / William Moar / Aqeel Ahmad / David Bowen / Catherine Chay / Arlene Howe / Uma Kesanapalli / Jennifer Lutke / Gregory Bean / Jason Milligan / Michael Pleau / Yong Yin / Waseem Akbar / Marty Heppler / Cara Griffith / Kimberly Morrell / Katherine Dunkmann / Heather Anderson / Jeffrey Ahrens / Pacifica Sommers / E Sethe Burgie / Fred Zinnel / Meiying Zheng / James Fitzpatrick / Michael Rau / Timothy Rydel / Tommi White / David Kerns / James Roberts / ![]() 要旨: New proteins are needed to control insects not controlled with (Bt) crops, and those evolving resistance to Bt crops. These proteins are increasingly being reported from non-Bt organisms to control ...New proteins are needed to control insects not controlled with (Bt) crops, and those evolving resistance to Bt crops. These proteins are increasingly being reported from non-Bt organisms to control Bt-resistant insects. However, these proteins mostly control the corn rootworm, spp. (Coleoptera), whereas most Bt-resistant insects are lepidopteran. We hypothesized that diversifying our search for proteins into non-Bt organisms, such as those related to used to control Japanese beetle , could yield proteins with new insecticidal activities against Lepidoptera. Here, we identified Vip3Cb1 and Vip3Cc1 with broad lepidopteran activity, the first Vip3 proteins discovered from strains in the containing clade. Vip3Cb1 protected plants against cotton bollworm, and tobacco budworm and fall armyworm, , and Southwestern corn borer, , in cotton and maize, respectively, like commercial Vip3Aa. Distinct from Vip3Aa, Vip3Cb1 also protected maize against European corn borer, , the primary maize pest in the United States, with recent reports of resistance to Bt proteins. Consistent with previous reports, insects resistant to Vip3Aa were cross-resistant to Vip3Cb1. Cryo-electron microscopy demonstrated that Vip3Cb1 formed a pore-shaped tetramer upon proteolytic activation, in agreement with the pore-forming mechanism of action of Vip3Aa. Thus, diversifying the search beyond Bt has led to the discovery of the first Vip3 proteins from spp. with different activity spectra from Vip3Aa, providing additional tools to control pests, including those currently resistant to Bt Cry proteins.IMPORTANCENew insecticidal proteins are needed for controlling insect pests that can devastate crop yield if left uncontrolled. Diversifying our search for new insecticidal proteins in spp. resulted in the discovery of Vip3Cb1 and Vip3Cc1 insecticidal proteins active against lepidopteran crop pests. Structure and cross-resistance studies indicate overlap in the mechanism of action between Vip3Cb1 and commercial Vip3Aa. However, new activities, such as controlling European corn borer, make these proteins important new tools in the insect control toolbox. | |||||||||||||||||||||||||||||||||
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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 | ![]() | 531.5 KB | 表示 | ![]() |
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PDB形式 | ![]() | 436.4 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 | ![]() | 86.8 KB | 表示 | |
CIF形式データ | ![]() | 130.2 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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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: 92480.500 Da / 分子数: 4 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 発現宿主: ![]() ![]() #2: 化合物 | ChemComp-MG / | 研究の焦点であるリガンドがあるか | N | Has protein modification | N | |
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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: 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: VIP3Cb1 Toxin Tetramer activated with trypsin / タイプ: COMPLEX / Entity ID: #1 / 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: 8 詳細: 50 mM Tris-HCl pH8.0, 500 mM NaCl, 5 mM MgCl2, 2mM DTT |
試料 | 濃度: 2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
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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: TFS 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): 2400 nm / 最小 デフォーカス(公称値): 1000 nm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 平均露光時間: 13.37 sec. / 電子線照射量: 53.3 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) 撮影したグリッド数: 1 / 実像数: 5644 |
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解析
EMソフトウェア | 名称: PHENIX / バージョン: 1.20.1_4487: / カテゴリ: モデル精密化 |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION |
粒子像の選択 | 選択した粒子像数: 2758038 |
対称性 | 点対称性: C4 (4回回転対称) |
3次元再構成 | 解像度: 3.04 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 219620 / アルゴリズム: FOURIER SPACE / 対称性のタイプ: POINT |