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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: 3cs0 | |||||||||
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タイトル | Crystal structure of DegP24 | |||||||||
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![]() | HYDROLASE / DegP / HtrA / protease / chaperone / PDZ / outer membrane protein / OMP / periplasm | |||||||||
機能・相同性 | ![]() peptidase Do / response to temperature stimulus / protein quality control for misfolded or incompletely synthesized proteins / : / serine-type peptidase activity / protein folding / peptidase activity / outer membrane-bounded periplasmic space / response to heat / response to oxidative stress ...peptidase Do / response to temperature stimulus / protein quality control for misfolded or incompletely synthesized proteins / : / serine-type peptidase activity / protein folding / peptidase activity / outer membrane-bounded periplasmic space / response to heat / response to oxidative stress / periplasmic space / serine-type endopeptidase activity / proteolysis / identical protein binding / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() | |||||||||
手法 | ![]() ![]() ![]() ![]() | |||||||||
![]() | Krojer, T. / Sawa, J. / Schaefer, E. / Saibil, H.R. / Ehrmann, M. / Clausen, T. | |||||||||
![]() | ![]() タイトル: Structural basis for the regulated protease and chaperone function of DegP. 著者: Tobias Krojer / Justyna Sawa / Eva Schäfer / Helen R Saibil / Michael Ehrmann / Tim Clausen / ![]() 要旨: All organisms have to monitor the folding state of cellular proteins precisely. The heat-shock protein DegP is a protein quality control factor in the bacterial envelope that is involved in ...All organisms have to monitor the folding state of cellular proteins precisely. The heat-shock protein DegP is a protein quality control factor in the bacterial envelope that is involved in eliminating misfolded proteins and in the biogenesis of outer-membrane proteins. Here we describe the molecular mechanisms underlying the regulated protease and chaperone function of DegP from Escherichia coli. We show that binding of misfolded proteins transforms hexameric DegP into large, catalytically active 12-meric and 24-meric multimers. A structural analysis of these particles revealed that DegP represents a protein packaging device whose central compartment is adaptable to the size and concentration of substrate. Moreover, the inner cavity serves antagonistic functions. Whereas the encapsulation of folded protomers of outer-membrane proteins is protective and might allow safe transit through the periplasm, misfolded proteins are eliminated in the molecular reaction chamber. Oligomer reassembly and concomitant activation on substrate binding may also be critical in regulating other HtrA proteases implicated in protein-folding diseases. | |||||||||
履歴 |
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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 | ![]() | 85.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 66.6 KB | 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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単位格子 |
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要素
#1: タンパク質 | 分子量: 47509.449 Da / 分子数: 1 / 変異: S210A / 由来タイプ: 組換発現 由来: (組換発現) ![]() ![]() 株: K12 / 遺伝子: degP, htrA, ptd, b0161, JW0157 / 発現宿主: ![]() ![]() |
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#2: タンパク質・ペプチド | 分子量: 443.539 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() ![]() |
Has protein modification | Y |
-実験情報
-実験
実験 | 手法: ![]() |
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試料調製
結晶 | マシュー密度: 3.56 Å3/Da / 溶媒含有率: 65.41 % |
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結晶化 | 温度: 292 K / 手法: 蒸気拡散法 / pH: 8.5 詳細: PEG 550 MME, NaCl, pH 8.5, vapor diffusion, temperature 292K |
-データ収集
回折 | 平均測定温度: 100 K | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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放射光源 | 由来: ![]() ![]() ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
検出器 | タイプ: ADSC QUANTUM 4 / 検出器: CCD / 日付: 2006年12月15日 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
放射 | モノクロメーター: Silicon (1 1 1) channel-cut / プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
放射波長 | 波長: 0.9792 Å / 相対比: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Reflection | Av σ(I) over netI: 12.96 / 数: 134848 / Rmerge(I) obs: 0.093 / D res high: 3 Å / Num. obs: 26475 / % possible obs: 99.7 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Diffraction reflection shell |
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反射 | 解像度: 3→30 Å / Num. obs: 26475 / % possible obs: 99.7 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 60.25 Å2 / Rmerge(I) obs: 0.093 / Net I/σ(I): 12.96 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
反射 シェル |
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-位相決定
位相決定 | 手法: ![]() |
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解析
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精密化 | 構造決定の手法: ![]()
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溶媒の処理 | Bsol: 28.863 Å2 | |||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 68.999 Å2
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精密化ステップ | サイクル: LAST / 解像度: 3→15 Å
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拘束条件 |
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Xplor file |
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