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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: SASDFL5 |
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![]() | Plasmodium falciparum Hsp70/Hsp90 organizing protein, Hop
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機能・相同性 | ![]() HSP90 chaperone cycle for steroid hormone receptors (SHR) in the presence of ligand / Hsp90 protein binding / cytosol 類似検索 - 分子機能 |
生物種 | ![]() ![]() |
![]() | ![]() タイトル: Structural studies of the Hsp70/Hsp90 organizing protein of Plasmodium falciparum and its modulation of Hsp70 and Hsp90 ATPase activities. 著者: Noeli S M Silva / Dayane E Bertolino-Reis / Paulo R Dores-Silva / Fátima B Anneta / Thiago V Seraphim / Leandro R S Barbosa / Júlio C Borges / ![]() 要旨: HOP is a cochaperone belonging to the foldosome, a system formed by the cytoplasmic Hsp70 and Hsp90 chaperones. HOP acts as an adapter protein capable of transferring client proteins from the first ...HOP is a cochaperone belonging to the foldosome, a system formed by the cytoplasmic Hsp70 and Hsp90 chaperones. HOP acts as an adapter protein capable of transferring client proteins from the first to the second molecular chaperone. HOP is a modular protein that regulates the ATPase activity of Hsp70 and Hsp90 to perform its function. To obtain more detailed information on the structure and function of this protein, we produced the recombinant HOP of Plasmodium falciparum (PfHOP). The protein was obtained in a folded form, with a high content of α-helix secondary structure. Unfolding experiments showed that PfHOP unfolds through two transitions, suggesting the presence of at least two domains with different stabilities. In addition, PfHOP primarily behaved as an elongated dimer in equilibrium with the monomer. Small-angle X-ray scattering data corroborated this interpretation and led to the reconstruction of a PfHOP ab initio model as a dimer. Finally, the PfHOP protein was able to inhibit and to stimulate the ATPase activity of the recombinant Hsp90 and Hsp70-1, respectively, of P. falciparum. Our results deepened the knowledge of the structure and function of PfHOP and further clarified its participation in the P. falciparum foldosome. |
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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 #2962 | ![]() タイプ: dummy / ソフトウェア: (DAMFILT 5.) / ダミー原子の半径: 3.00 A / 対称性: P2 / カイ2乗値: -1.000 ![]() |
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モデル #2973 | ![]() タイプ: dummy / ダミー原子の半径: 3.00 A / 対称性: P2 / カイ2乗値: -1.000 ![]() |
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試料
![]() | 名称: Plasmodium falciparum Hsp70/Hsp90 organizing protein, Hop 試料濃度: 1.00-2.80 |
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バッファ | 名称: 25 mM Tris-HCl, 100 mM NaCl, 1 mM EDTA, 1 mM β-mercaptoethanol pH: 8 |
要素 #1620 | 名称: PfHop / タイプ: protein / 記述: STI1-like protein / 分子量: 68.219 / 分子数: 2 / 由来: Plasmodium falciparum (isolate 3D7) / 参照: UniProt: Q8ILC1 配列: MGSSHHHHHH SSGLVPRGSH MVNKEEAQRL KELGNKCFQE GKYEEAVKYF SDAITNDPLD HVLYSNLSGA FASLGRFYEA LESANKCISI KKDWPKGYIR KGCAEHGLRQ LSNAEKTYLE GLKIDPNNKS LQDALSKVRN ENMLENAQLI AHLNNIIEND PQLKSYKEEN ...配列: MGSSHHHHHH SSGLVPRGSH MVNKEEAQRL KELGNKCFQE GKYEEAVKYF SDAITNDPLD HVLYSNLSGA FASLGRFYEA LESANKCISI KKDWPKGYIR KGCAEHGLRQ LSNAEKTYLE GLKIDPNNKS LQDALSKVRN ENMLENAQLI AHLNNIIEND PQLKSYKEEN SNYPHELLNT IKSINSNPMN IRIILSTCHP KISEGVEKFF GFKFTGEGND AEERQRQQRE EEERRKKKEE EERKKKEEEE MKKQNRTPEQ IQGDEHKLKG NEFYKQKKFD EALKEYEEAI QINPNDIMYH YNKAAVHIEM KNYDKAVETC LYAIENRYNF KAEFIQVAKL YNRLAISYIN MKKYDLAIEA YRKSLVEDNN RATRNALKEL ERRKEKEEKE AYIDPDKAEE HKNKGNEYFK NNDFPNAKKE YDEAIRRNPN DAKLYSNRAA ALTKLIEYPS ALEDVMKAIE LDPTFVKAYS RKGNLHFFMK DYYKALQAYN KGLELDPNNK ECLEGYQRCA FKIDEMSKSE KVDEEQFKKS MADPEIQQII SDPQFQIILQ KLNENPNSIS EYIKDPKIFN GLQKLIAAGI LKVR |
-実験情報
ビーム | 設備名称: Brazilian Synchrotron Light Laboratory SAXS1 Beamline 地域: Campinas / 国: Brazil ![]() | ||||||||||||||||||||||||||||||||||||
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検出器 | 名称: Pilatus 300K / タイプ: 20Hz | ||||||||||||||||||||||||||||||||||||
スキャン | 測定日: 2016年8月3日 / セル温度: 20 °C / 照射時間: 100 sec. / フレーム数: 1 / 単位: 1/A /
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距離分布関数 P(R) |
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結果 | コメント: Top: The model represents the averaged spatial disposition (volume and bead-occupancy corrected; damfilt model) obtained from several spatially aligned individual dummy atom model (DAM) ...コメント: Top: The model represents the averaged spatial disposition (volume and bead-occupancy corrected; damfilt model) obtained from several spatially aligned individual dummy atom model (DAM) reconstructions calculated using DAMMIF. Bottom: A single DAMMIF representative model with the lowest NSD from the aligned DAM cohort. The corresponding fit to the SAXS data is displayed.
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