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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: 6ne0 | |||||||||
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タイトル | Structure of double-stranded target DNA engaged Csy complex from Pseudomonas aeruginosa (PA-14) | |||||||||
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![]() | IMMUNE SYSTEM/RNA / type I-F CRISPR RNA-guided surveillance complex / viral protein mimic / Csy-complex / IMMUNE SYSTEM-RNA complex | |||||||||
機能・相同性 | ![]() maintenance of CRISPR repeat elements / endonuclease activity / defense response to virus / 加水分解酵素; エステル加水分解酵素 / RNA binding 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: 3.4 Å | |||||||||
![]() | Chowdhury, S. / Rollins, M.F. / Carter, J. / Golden, S.M. / Miettinen, H.M. / Santiago-Frangos, A. / Faith, D. / Lawrence, M.C. / Wiedenheft, B. / Lander, G.C. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structure Reveals a Mechanism of CRISPR-RNA-Guided Nuclease Recruitment and Anti-CRISPR Viral Mimicry. 著者: MaryClare F Rollins / Saikat Chowdhury / Joshua Carter / Sarah M Golden / Heini M Miettinen / Andrew Santiago-Frangos / Dominick Faith / C Martin Lawrence / Gabriel C Lander / Blake Wiedenheft / ![]() 要旨: Bacteria and archaea have evolved sophisticated adaptive immune systems that rely on CRISPR RNA (crRNA)-guided detection and nuclease-mediated elimination of invading nucleic acids. Here, we present ...Bacteria and archaea have evolved sophisticated adaptive immune systems that rely on CRISPR RNA (crRNA)-guided detection and nuclease-mediated elimination of invading nucleic acids. Here, we present the cryo-electron microscopy (cryo-EM) structure of the type I-F crRNA-guided surveillance complex (Csy complex) from Pseudomonas aeruginosa bound to a double-stranded DNA target. Comparison of this structure to previously determined structures of this complex reveals a ∼180-degree rotation of the C-terminal helical bundle on the "large" Cas8f subunit. We show that the double-stranded DNA (dsDNA)-induced conformational change in Cas8f exposes a Cas2/3 "nuclease recruitment helix" that is structurally homologous to a virally encoded anti-CRISPR protein (AcrIF3). Structural homology between Cas8f and AcrIF3 suggests that AcrIF3 is a mimic of the Cas8f nuclease recruitment helix. | |||||||||
履歴 |
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構造の表示
ムービー |
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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 | ![]() | 543.8 KB | 表示 | ![]() |
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PDB形式 | ![]() | 434.4 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 | ![]() | 1.3 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.3 MB | 表示 | |
XML形式データ | ![]() | 81.3 KB | 表示 | |
CIF形式データ | ![]() | 128.2 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
-CRISPR-associated protein ... , 3種, 8分子 ABCDEFGH
#1: タンパク質 | 分子量: 49194.168 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Gaps within the structure correspond to regions that could not be modeled due to missing map density. 由来: (組換発現) ![]() 株: UCBPP-PA14 / 遺伝子: csy1, PA14_33330 / 発現宿主: ![]() ![]() |
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#2: タンパク質 | 分子量: 36244.074 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: Gaps within the structure correspond to regions that could not be modeled due to missing map density. 由来: (組換発現) ![]() 株: UCBPP-PA14 / 遺伝子: csy2, PA14_33320 / 発現宿主: ![]() ![]() |
#3: タンパク質 | 分子量: 37579.273 Da / 分子数: 6 / 由来タイプ: 組換発現 詳細: Gaps within the structure correspond to regions that could not be modeled due to missing map density. 由来: (組換発現) ![]() 株: UCBPP-PA14 / 遺伝子: csy3, csy1-3, PA14_33310 / 発現宿主: ![]() ![]() |
-DNA鎖 , 2種, 2分子 NO
#6: DNA鎖 | 分子量: 13584.703 Da / 分子数: 1 / 由来タイプ: 合成 由来: (合成) ![]() |
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#7: DNA鎖 | 分子量: 10476.714 Da / 分子数: 1 / 由来タイプ: 合成 詳細: Gaps within the structure correspond to regions that could not be modeled due to missing map density. 由来: (合成) ![]() |
-タンパク質 / RNA鎖 , 2種, 2分子 LM
#4: タンパク質 | 分子量: 21675.781 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 株: UCBPP-PA14 / 遺伝子: cas6f, csy4, PA14_33300 / 発現宿主: ![]() ![]() 参照: UniProt: Q02MM2, 加水分解酵素; エステル加水分解酵素 |
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#5: RNA鎖 | 分子量: 19265.404 Da / 分子数: 1 / 由来タイプ: 合成 詳細: Gaps within the structure correspond to regions that could not be modeled due to missing map density. 由来: (合成) ![]() |
-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: DOUBLE-STRANDED TARGET DNA ENGAGED CSY COMPLEX FROM PSEUDOMONAS AERUGINOSA (PA-14) タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT | ||||||||||||||||||||||||||||||
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分子量 | 値: 0.36 MDa / 実験値: NO | ||||||||||||||||||||||||||||||
由来(天然) | 生物種: ![]() | ||||||||||||||||||||||||||||||
由来(組換発現) | 生物種: ![]() ![]() | ||||||||||||||||||||||||||||||
緩衝液 | pH: 7.5 | ||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 2 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES | ||||||||||||||||||||||||||||||
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: UltrAuFoil | ||||||||||||||||||||||||||||||
急速凍結 | 装置: HOMEMADE PLUNGER / 凍結剤: ETHANE 詳細: Freezing was carried out in a cold room at 4 degrees C and relative humidity of 98%. 5 ul sample was applied to plasma cleaned grid and manually blotted with Whatman 1 filter paper for 5-7 ...詳細: Freezing was carried out in a cold room at 4 degrees C and relative humidity of 98%. 5 ul sample was applied to plasma cleaned grid and manually blotted with Whatman 1 filter paper for 5-7 sec before plunge freezing. |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Talos Arctica / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TALOS ARCTICA 詳細: OBJECTIVE ASTIGMATISM WAS CORRECTED AT 36000X MAGNIFICATION USING THON RINGS VISUALIZED WITH A K2 CAMERA. |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 36000 X / 最大 デフォーカス(公称値): 1500 nm / 最小 デフォーカス(公称値): 600 nm / Cs: 2.7 mm |
撮影 | 電子線照射量: 0.58 e/Å2 フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 実像数: 3208 |
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解析
ソフトウェア | 名称: PHENIX / バージョン: dev_3304: / 分類: 精密化 | ||||||||||||||||||||
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EMソフトウェア |
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画像処理 | 詳細: Super-resolution movie frames were Fourier-binned 2X2 times to a pixel size of 1.15 Angstrom/pixel prior to dose-weighted frame alignment using MotionCorr2. | ||||||||||||||||||||
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: 1543677 詳細: Particles were initially extracted binned by 2 with a box size of 144 pixels (2.3 Angstrom/pixel). The final processing was carried out with an unbinned particle stack with a box size of 288 ...詳細: Particles were initially extracted binned by 2 with a box size of 144 pixels (2.3 Angstrom/pixel). The final processing was carried out with an unbinned particle stack with a box size of 288 pixels (1.15 Angstrom/pixel). | ||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||
3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 291227 / アルゴリズム: FOURIER SPACE 詳細: The final map was reconstructed using several focused maps from different sub-regions of the complex. These were initially aligned to each other and then stitched using the vop maximum ...詳細: The final map was reconstructed using several focused maps from different sub-regions of the complex. These were initially aligned to each other and then stitched using the vop maximum function in UCSF chimera. The resolution of the final composite map is 3.2 angstrom. 対称性のタイプ: POINT | ||||||||||||||||||||
原子モデル構築 | プロトコル: AB INITIO MODEL / 空間: REAL 詳細: THE ATOMIC MODELS FOR CAS5F, CAS8F, CAS6F, AND CAS7F FROM THE CSY ACR COMPLEX (PDB ID 5UZ9) WERE USED AS INITIAL TEMPLATE MODELS FOR MODEL BUILDING. THESE WERE INDIVIDUALLY RIGID BODY-FITTED ...詳細: THE ATOMIC MODELS FOR CAS5F, CAS8F, CAS6F, AND CAS7F FROM THE CSY ACR COMPLEX (PDB ID 5UZ9) WERE USED AS INITIAL TEMPLATE MODELS FOR MODEL BUILDING. THESE WERE INDIVIDUALLY RIGID BODY-FITTED INTO THE RECONSTRUCTED MAPS USING THE FIT MAP FUNCTION IN UCSF CHIMERA, AND RESIDUE REGISTERS AND BACKBONE GEOMETRIES WERE FIXED IN COOT. MODELS FOR THE CRRNA AND DNA STRANDS WERE ALSO MANUALLY BUILT INTO THE MAP USING COOT. | ||||||||||||||||||||
原子モデル構築 | PDB-ID: 5UZ9 Accession code: 5UZ9 / Source name: PDB / タイプ: experimental model | ||||||||||||||||||||
精密化 | 最高解像度: 3.4 Å |