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-基本情報
登録情報 | データベース: SASBDB / ID: SASDB54 |
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試料 | Leishmania braziliensis stress-induced protein sti1 (LbHop), full length construct
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機能・相同性 | 機能・相同性情報 |
生物種 | Leishmania braziliensis (ブラジルリーシュマニア) |
引用 | ジャーナル: Arch Biochem Biophys / 年: 2016 タイトル: Low sequence identity but high structural and functional conservation: The case of Hsp70/Hsp90 organizing protein (Hop/Sti1) of Leishmania braziliensis. 著者: Fernanda A H Batista / Thiago V Seraphim / Clelton A Santos / Marisvanda R Gonzaga / Leandro R S Barbosa / Carlos H I Ramos / Júlio C Borges / 要旨: Parasites belonging to the genus Leishmania are subjected to extensive environmental changes during their life cycle; molecular chaperones/co-chaperones act as protagonists in this scenario to ...Parasites belonging to the genus Leishmania are subjected to extensive environmental changes during their life cycle; molecular chaperones/co-chaperones act as protagonists in this scenario to maintain cellular homeostasis. Hop/Sti1 is a co-chaperone that connects the Hsp90 and Hsp70 systems, modulating their ATPase activities and affecting the fate of client proteins because it facilitates their transfer from the Hsp70 to the Hsp90 chaperone. Hop/Sti1 is one of the most prevalent co-chaperones, highlighting its importance despite the relatively low sequence identity among orthologue proteins. This multi-domain protein comprises three tetratricopeptides domains (TPR1, TPR2A and TPR2B) and two Asp/Pro-rich domains. Given the importance of Hop/Sti1 for the chaperone system and for Leishmania protozoa viability, the Leishmania braziliensis Hop (LbHop) and a truncated mutant (LbHop(TPR2AB)) were characterized. Structurally, both proteins are α-helix-rich and highly elongated monomeric proteins. Functionally, they inhibited the ATPase activity of Leishmania braziliensis Hsp90 (LbHsp90) to a similar extent, and the thermodynamic parameters of their interactions with LbHsp90 were similar, indicating that TPR2A-TPR2B forms the functional center for the LbHop interaction with LbHsp90. These results highlight the structural and functional similarity of Hop/Sti1 proteins, despite their low sequence conservation compared to the Hsp70 and Hsp90 systems, which are phylogenetic highly conserved. |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-モデル
モデル #482 | タイプ: dummy / ソフトウェア: DAMFILT / ダミー原子の半径: 1.90 A / カイ2乗値: 3.549 Omokage検索でこの集合体の類似形状データを探す (詳細) |
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-試料
試料 | 名称: Leishmania braziliensis stress-induced protein sti1 (LbHop), full length construct 試料濃度: 0.80-1.80 |
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バッファ | 名称: Tris / 濃度: 25.00 mM / pH: 7.5 / 組成: 100 mM NaCl, 1 mM EDTA, 1 mM β-mercaptoethanol |
要素 #314 | 名称: Hop/Sti1 / タイプ: protein / 記述: Stress-induced protein sti1 / 分子量: 62.452 / 分子数: 1 / 由来: Leishmania braziliensis / 参照: UniProt: A4H5F0 配列: MDANELKNEG NKEFSAGRYV EAVNYFSKAI QLDGQNSVLY SNRSACFAAM QKYKDALDDA DKCISIKPNW AKGYVRRGAA LHGMRRYDDA IAAYEKGLSV DPSNSGCTQG VKDVQVAKSR EARDPIARVF TPEAFRKIQE NPKLSLLMLQ PDYVKMVDTV VRDPSQARLY ...配列: MDANELKNEG NKEFSAGRYV EAVNYFSKAI QLDGQNSVLY SNRSACFAAM QKYKDALDDA DKCISIKPNW AKGYVRRGAA LHGMRRYDDA IAAYEKGLSV DPSNSGCTQG VKDVQVAKSR EARDPIARVF TPEAFRKIQE NPKLSLLMLQ PDYVKMVDTV VRDPSQARLY MEDQRFALTL MYLSGMKIPN DDEDDEEERP SAKAAAEAKA KEEKKLLTDN EKEAMALKEE GNKLYLSKRF EEALSKYQEA QAKDPKNTLY ILNVSAVYFE QRDYEKCITE CERGIEHGRE NHCDYTIVAK LMTRHAFCLQ KQKKYEAAID LYKRALVEWR NPDTLKKLTE CEKEHQKAVE EAYIDPEIAR QKKDEGNQYF KEDKFPEAVA AYTEAIKRNP AEHTSYSNRA AAYIKLGAFN DALKDAEKCI ELKPDFVKGY ARKGHAYFWT KQYNRALQAY DEGLKVDPSN ADCKDGRLRT IMRIQEMASG QSADGDEAAR RAMDDPEIAA IMQDSYMQLV LKEMQNDPTR IQEYMKDPGI SVKINKLISA GIIRFGQ |
-実験情報
ビーム | 設備名称: Brazilian Synchrotron Light Laboratory SAXS1 Beamline 地域: Campinas / 国: Brazil / 線源: X-ray synchrotron | |||||||||||||||||||||||||||||||||
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検出器 | 名称: Pilatus 300K / タイプ: 20Hz | |||||||||||||||||||||||||||||||||
スキャン | タイトル: Stress-induced protein sti1 (Hop/Sti1) / 測定日: 2016年2月21日 / 単位: 1/nm /
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距離分布関数 P(R) | ソフトウェア P(R): GNOM 4.6 / ポイント数: 497 /
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結果 | カーブのタイプ: merged /
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