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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: SASBDB / ID: SASDAN5 |
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![]() | Cross-linked complex CytC_Adr
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生物種 | ![]() ![]() |
![]() | ![]() タイトル: Dynamics in a pure encounter complex of two proteins studied by solution scattering and paramagnetic NMR spectroscopy. 著者: Xingfu Xu / Wolfgang Reinle / Frank Hannemann / Peter V Konarev / Dmitri I Svergun / Rita Bernhardt / Marcellus Ubbink / ![]() 要旨: In the general view of protein-complex formation, a transient and dynamic encounter complex proceeds to form a more stable, well-defined, and active form. In weak protein complexes, however, the ...In the general view of protein-complex formation, a transient and dynamic encounter complex proceeds to form a more stable, well-defined, and active form. In weak protein complexes, however, the encounter state can represent a significant population of the complex. The redox proteins adrenodoxin (Adx) and cytochrome c (C c) associate to form such a weak and short-lived complex, which is nevertheless active in electron transfer. To study the conformational freedom within the protein complex, the native complex has been compared to a cross-linked counterpart by using solution scattering and NMR spectroscopy. Oligomerization behavior of the native complex in solution revealed by small-angle X-ray scattering indicates a stochastic nature of complex formation. For the cross-linked complex, interprotein paramagnetic effects are observed, whereas for the native complex, extensive averaging occurs, consistent with multiple orientations of the proteins within the complex. Simulations show that C c samples about half of the surface area of adrenodoxin. It is concluded that the complex of Adx/C c is entirely dynamic and can be considered as a pure encounter complex. |
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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
-モデル
モデル #131 | ![]() タイプ: dummy / ソフトウェア: Dammin / ダミー原子の半径: 1.90 A / カイ2乗値: 5.466244 ![]() |
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モデル #132 | ![]() タイプ: atomic / ソフトウェア: Sasref / カイ2乗値: 3.4969 ![]() |
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試料
![]() | 名称: Cross-linked complex CytC_Adr / Sample MW: 22 kDa / 試料濃度: 2.40-24.00 / Entity id: 108 / 109 |
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バッファ | 名称: HEPES / 濃度: 20.00 mM / pH: 7.4 / 組成: DTT 2.000 mM |
要素 #108 | 名称: Cyt_C / タイプ: protein / 記述: Cytochrome C / 分子量: 11 / 分子数: 1 / 由来: Escherichia coli 配列: TEFKAGSAKK GATLFKTRCL QCHTVEKGGP HKVGPNLHGI FGRHSGQAEG YSYTDANIKK NVLWDENNMS EYLTNPKKYI PGTKMAFGGL KKEKDRNDLI TYLKKATE |
要素 #109 | 名称: Adrenodoxin / タイプ: protein / 記述: Adrenodoxin / 分子量: 11 / 分子数: 1 / 由来: Escherichia coli 配列: KITVHFINRD GETLTTKGKI GDSLLDVVVQ NNLDIDGFGA CEGTLACSTC HLIFEQHIFE KLEEAITDEE NDMLDLAYGL TDDRSRLGCQ ICLTKAMDNM TVRVP |
-実験情報
ビーム | 設備名称: ![]() ![]() ![]() | |||||||||||||||||||||
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検出器 | 名称: MAR 345 Image Plate | |||||||||||||||||||||
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距離分布関数 P(R) |
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結果 |
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