+
データを開く
-
基本情報
登録情報 | データベース: SASBDB / ID: SASDEG2 |
---|---|
![]() | Mitochondrial import inner membrane translocase complex TIM9·10 in complex with a precursor (GDP/GTP carrier (Ggc1))
|
機能・相同性 | ![]() guanine nucleotide transport / mitochondrial intermembrane space protein transporter complex / Mitochondrial protein import / TIM22 mitochondrial import inner membrane insertion complex / guanine nucleotide transmembrane transporter activity / protein transporter activity / protein insertion into mitochondrial inner membrane / mitochondrial genome maintenance / mitochondrial intermembrane space / transmembrane transport ...guanine nucleotide transport / mitochondrial intermembrane space protein transporter complex / Mitochondrial protein import / TIM22 mitochondrial import inner membrane insertion complex / guanine nucleotide transmembrane transporter activity / protein transporter activity / protein insertion into mitochondrial inner membrane / mitochondrial genome maintenance / mitochondrial intermembrane space / transmembrane transport / unfolded protein binding / intracellular iron ion homeostasis / mitochondrial inner membrane / mitochondrion / metal ion binding 類似検索 - 分子機能 |
生物種 | ![]() ![]() |
![]() | ![]() タイトル: Structural Basis of Membrane Protein Chaperoning through the Mitochondrial Intermembrane Space. 著者: Katharina Weinhäupl / Caroline Lindau / Audrey Hessel / Yong Wang / Conny Schütze / Tobias Jores / Laura Melchionda / Birgit Schönfisch / Hubert Kalbacher / Beate Bersch / Doron Rapaport / ...著者: Katharina Weinhäupl / Caroline Lindau / Audrey Hessel / Yong Wang / Conny Schütze / Tobias Jores / Laura Melchionda / Birgit Schönfisch / Hubert Kalbacher / Beate Bersch / Doron Rapaport / Martha Brennich / Kresten Lindorff-Larsen / Nils Wiedemann / Paul Schanda / ![]() ![]() ![]() 要旨: The exchange of metabolites between the mitochondrial matrix and the cytosol depends on β-barrel channels in the outer membrane and α-helical carrier proteins in the inner membrane. The essential ...The exchange of metabolites between the mitochondrial matrix and the cytosol depends on β-barrel channels in the outer membrane and α-helical carrier proteins in the inner membrane. The essential translocase of the inner membrane (TIM) chaperones escort these proteins through the intermembrane space, but the structural and mechanistic details remain elusive. We have used an integrated structural biology approach to reveal the functional principle of TIM chaperones. Multiple clamp-like binding sites hold the mitochondrial membrane proteins in a translocation-competent elongated form, thus mimicking characteristics of co-translational membrane insertion. The bound preprotein undergoes conformational dynamics within the chaperone binding clefts, pointing to a multitude of dynamic local binding events. Mutations in these binding sites cause cell death or growth defects associated with impairment of carrier and β-barrel protein biogenesis. Our work reveals how a single mitochondrial "transfer-chaperone" system is able to guide α-helical and β-barrel membrane proteins in a "nascent chain-like" conformation through a ribosome-free compartment. |
![]() |
|
-
構造の表示
構造ビューア | 分子: ![]() ![]() |
---|
-
ダウンロードとリンク
-モデル
モデル #2193 | ![]() タイプ: dummy / ソフトウェア: (r5575) / ダミー原子の半径: 3.40 A / 対称性: C1 / カイ2乗値: 1.358 / P-value: 0.000045 ![]() |
---|---|
モデル #2224 | ![]() タイプ: mix / ダミー原子の半径: 1.90 A / カイ2乗値: 1.89 ![]() |
モデル #2237 | ![]() タイプ: atomic コメント: Snapshot from a 7ns coarse-grained simulation. Fit corresponds to weighte ensemble, based on 16 runs ![]() |
モデル #2238 | ![]() タイプ: atomic コメント: Snapshot from a 7ns coarse-grained simulation. Fit corresponds to weighte ensemble, based on 16 runs ![]() |
モデル #2239 | ![]() タイプ: atomic コメント: Snapshot from a 7ns coarse-grained simulation. Fit corresponds to weighte ensemble, based on 16 runs ![]() |
モデル #2240 | ![]() タイプ: atomic コメント: Snapshot from a 7ns coarse-grained simulation. Fit corresponds to weighte ensemble, based on 16 runs ![]() |
モデル #2241 | ![]() タイプ: atomic コメント: Snapshot from a 7ns coarse-grained simulation. Fit corresponds to weighte ensemble, based on 16 runs ![]() |
モデル #2242 | ![]() タイプ: atomic コメント: Snapshot from a 7ns coarse-grained simulation. Fit corresponds to weighte ensemble, based on 16 runs ![]() |
モデル #2243 | ![]() タイプ: atomic コメント: Snapshot from a 7ns coarse-grained simulation. Fit corresponds to weighte ensemble, based on 16 runs ![]() |
モデル #2244 | ![]() タイプ: atomic コメント: Snapshot from a 7ns coarse-grained simulation. Fit corresponds to weighte ensemble, based on 16 runs ![]() |
-
試料
![]() | 名称: Mitochondrial import inner membrane translocase complex TIM9·10 in complex with a precursor (GDP/GTP carrier (Ggc1)) 試料濃度: 2 mg/ml / Entity id: 1215 / 1216 / 1217 |
---|---|
バッファ | 名称: 50mM Tris, 150mM NaCl, imidiazole / pH: 7.4 コメント: The imidiazole concentration varies between 200 mM and 300 mM |
要素 #1215 | 名称: TIM9 / タイプ: protein 記述: Mitochondrial import inner membrane translocase subunit TIM9 分子量: 10.202 / 分子数: 6 由来: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) 参照: UniProt: O74700 配列: MDALNSKEQQ EFQKVVEQKQ MKDFMRLYSN LVERCFTDCV NDFTTSKLTN KEQTCIMKCS EKFLKHSERV GQRFQEQNAA LGQGLGR |
要素 #1216 | 名称: TIM10 / タイプ: protein 記述: Mitochondrial import inner membrane translocase subunit TIM10 分子量: 10.23 / 分子数: 6 由来: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) 参照: UniProt: P87108 配列: GSFLGFGGGQ PQLSSQQKIQ AAEAELDLVT DMFNKLVNNC YKKCINTSYS EGELNKNESS CLDRCVAKYF ETNVQVGENM QKMGQSFNAA GKF |
要素 #1217 | 名称: GGC1 / タイプ: protein / 記述: Mitochondrial GTP/GDP carrier protein 1 / 分子量: 33.426 / 分子数: 1 由来: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) 参照: UniProt: P38988 配列: QSGLARLLGS ASAGIMEIAV FHPVDTISKR LMSNHTKITS GQELNRVIFR DHFSEPLGKR LFTLFPGLGY AASYKVLQRV YKYGGQPFAN EFLNKHYKKD FDNLFGEKTG KAMRSAAAGS LIGIGEIVLL PLDVLKIKRQ TNPESFKGRG FIKILRDEGL FNLYRGWGWT ...配列: QSGLARLLGS ASAGIMEIAV FHPVDTISKR LMSNHTKITS GQELNRVIFR DHFSEPLGKR LFTLFPGLGY AASYKVLQRV YKYGGQPFAN EFLNKHYKKD FDNLFGEKTG KAMRSAAAGS LIGIGEIVLL PLDVLKIKRQ TNPESFKGRG FIKILRDEGL FNLYRGWGWT AARNAPGSFA LFGGNAFAKE YILGLKDYSQ ATWSQNFISS IVGASSSLIV SAPLDVIKTR IQNRNFDNPE SGLRIVKNTL KNEGVTAFFK GLTPKLLTTG PKLVFSFALA QSLIPRFDNL LSKLEHHHHH H |
-実験情報
ビーム | 設備名称: ESRF BM29 / 地域: Grenoble / 国: France ![]() | ||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
検出器 | 名称: Pilatus 1M / タイプ: Dectris / Pixsize x: 172 mm | ||||||||||||||||||||||||||||||
スキャン | 測定日: 2016年2月22日 / 保管温度: 20 °C / セル温度: 20 °C / 照射時間: 1 sec. / フレーム数: 50 / 単位: 1/nm /
| ||||||||||||||||||||||||||||||
距離分布関数 P(R) |
| ||||||||||||||||||||||||||||||
結果 |
|