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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: 2c7e | |||||||||
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タイトル | REVISED ATOMIC STRUCTURE FITTING INTO A GROEL(D398A)-ATP7 CRYO-EM MAP (EMD 1047) | |||||||||
![]() | 60 KDA CHAPERONIN | |||||||||
![]() | CELL CYCLE / ATP-BINDING / CHAPERONE / CHAPERONIN / D398A / HP60 CLASS / CELL DIVISION / NUCLEOTIDE-BINDING / PHOSPHORYLATION | |||||||||
機能・相同性 | ![]() GroEL-GroES complex / chaperonin ATPase / virion assembly / : / isomerase activity / ATP-dependent protein folding chaperone / response to radiation / unfolded protein binding / protein folding / response to heat ...GroEL-GroES complex / chaperonin ATPase / virion assembly / : / isomerase activity / ATP-dependent protein folding chaperone / response to radiation / unfolded protein binding / protein folding / response to heat / protein refolding / magnesium ion binding / ATP hydrolysis activity / ATP binding / identical protein binding / membrane / cytosol / cytoplasm 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: 14.9 Å | |||||||||
![]() | Ranson, N.A. / Farr, G.W. / Roseman, A.M. / Gowen, B. / Fenton, W.A. / Horwich, A.L. / Saibil, H.R. | |||||||||
![]() | ![]() タイトル: ATP-bound states of GroEL captured by cryo-electron microscopy. 著者: N A Ranson / G W Farr / A M Roseman / B Gowen / W A Fenton / A L Horwich / H R Saibil / ![]() 要旨: The chaperonin GroEL drives its protein-folding cycle by cooperatively binding ATP to one of its two rings, priming that ring to become folding-active upon GroES binding, while simultaneously ...The chaperonin GroEL drives its protein-folding cycle by cooperatively binding ATP to one of its two rings, priming that ring to become folding-active upon GroES binding, while simultaneously discharging the previous folding chamber from the opposite ring. The GroEL-ATP structure, determined by cryo-EM and atomic structure fitting, shows that the intermediate domains rotate downward, switching their intersubunit salt bridge contacts from substrate binding to ATP binding domains. These observations, together with the effects of ATP binding to a GroEL-GroES-ADP complex, suggest structural models for the ATP-induced reduction in affinity for polypeptide and for cooperativity. The model for cooperativity, based on switching of intersubunit salt bridge interactions around the GroEL ring, may provide general insight into cooperativity in other ring complexes and molecular machines. | |||||||||
履歴 |
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Remark 700 | SHEET THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN ORDER TO REPRESENT THIS FEATURE IN ... SHEET THE SHEET STRUCTURE OF THIS MOLECULE IS BIFURCATED. IN ORDER TO REPRESENT THIS FEATURE IN THE SHEET RECORDS BELOW, TWO SHEETS ARE DEFINED. |
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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 | ![]() | 1.3 MB | 表示 | ![]() |
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PDB形式 | ![]() | 1.1 MB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-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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1 |
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要素
#1: タンパク質 | 分子量: 57188.410 Da / 分子数: 14 / 変異: YES / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() #2: 化合物 | ChemComp-K / #3: 化合物 | ChemComp-MG / #4: 化合物 | ChemComp-ATP / #5: 水 | ChemComp-HOH / | 構成要素の詳細 | GROEL IS A HOMOOLIGOMER OF FOURTEEN SUBUNITS ARRANGED IN A DOUBLE RING STRUCTURE. ENGINEERED ...GROEL IS A HOMOOLIGOM | 配列の詳細 | MET 1 IN ALL CHAINS HAS BEEN POST-TRANSLATIO | |
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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: GROEL(D398A)-ATP / タイプ: COMPLEX |
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緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | 詳細: HOLEY CARBON |
急速凍結 | 装置: HOMEMADE PLUNGER / 凍結剤: ETHANE / 詳細: LIQUID ETHANE |
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電子顕微鏡撮影
顕微鏡 | モデル: FEI/PHILIPS CM200FEG |
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電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 38000 X / 倍率(補正後): 37604 X / 最大 デフォーカス(公称値): 5000 nm / 最小 デフォーカス(公称値): 1200 nm / Cs: 2 mm |
試料ホルダ | 温度: 100 K |
撮影 | 電子線照射量: 20 e/Å2 / フィルム・検出器のモデル: KODAK SO-163 FILM |
画像スキャン | デジタル画像の数: 160 |
放射波長 | 相対比: 1 |
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解析
EMソフトウェア |
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CTF補正 | 詳細: FULL CORRECTION ON 2D CLASS AVERAGES | ||||||||||||
対称性 | 点対称性: D7 (2回x7回 2面回転対称) | ||||||||||||
3次元再構成 | 手法: PROJECTION MATCHING-BASED ANGULAR REFINEMENT AND ITERATIVE ALGEBRAIC RECONSTRUCTION IN SPIDER 解像度: 14.9 Å / 解像度の算出法: FSC 0.5 CUT-OFF / 粒子像の数: 6404 / ピクセルサイズ(実測値): 1.86 Å 詳細: RIGID BODY FITTING IN URO, AFTER A 4 PER CENT MAGNIFICATION CORRECTION BEING APPLIED TO THE EM MAP. THIS SUBMISSION REPLACES PREVIOUS ENTRY 1GR6 対称性のタイプ: POINT | ||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL / 詳細: METHOD--LOCAL CORRELATION USING DOCKEM | ||||||||||||
精密化 | 最高解像度: 14.9 Å | ||||||||||||
精密化ステップ | サイクル: LAST / 最高解像度: 9.7 Å
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