- PDB-7btx: The mitochondrial SAM-Mdm10 supercomplex in GDN micelle from S.cere -
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基本情報
登録情報
データベース: PDB / ID: 7btx
タイトル
The mitochondrial SAM-Mdm10 supercomplex in GDN micelle from S.cere
要素
MDM10 isoform 1
Mitochondrial outer membrane beta-barrel protein
Sorting assembly machinery 35 kDa subunit
Sorting assembly machinery 37 kDa subunit
キーワード
TRANSLOCASE / Mitochondria
機能・相同性
機能・相同性情報
ERMES complex / mitochondrial outer membrane translocase complex assembly / SAM complex / protein import into mitochondrial matrix / phospholipid transport / outer membrane / protein insertion into mitochondrial outer membrane / mitochondrion organization / mitochondrial outer membrane / mitochondrion / cytoplasm 類似検索 - 分子機能
Mitochondrial distribution and morphology protein 10 / Mitochondrial distribution and morphology protein 10 / Sorting assembly machinery 35kDa subunit / Tom37, C-terminal domain / SAM35, subunit of SAM coomplex / Tom37 C-terminal domain / Mitochondrial outer membrane transport complex Sam37/metaxin, N-terminal domain / : / Outer mitochondrial membrane transport complex protein / membrane protein fhac: a member of the omp85/tpsb transporter family ...Mitochondrial distribution and morphology protein 10 / Mitochondrial distribution and morphology protein 10 / Sorting assembly machinery 35kDa subunit / Tom37, C-terminal domain / SAM35, subunit of SAM coomplex / Tom37 C-terminal domain / Mitochondrial outer membrane transport complex Sam37/metaxin, N-terminal domain / : / Outer mitochondrial membrane transport complex protein / membrane protein fhac: a member of the omp85/tpsb transporter family / Bacterial surface antigen (D15) / Omp85 superfamily domain / Porin / Beta Barrel / Mainly Beta 類似検索 - ドメイン・相同性
Japan Agency for Medical Research and Development (AMED)
日本
引用
ジャーナル: Nature / 年: 2021 タイトル: Mitochondrial sorting and assembly machinery operates by β-barrel switching. 著者: Hironori Takeda / Akihisa Tsutsumi / Tomohiro Nishizawa / Caroline Lindau / Jon V Busto / Lena-Sophie Wenz / Lars Ellenrieder / Kenichiro Imai / Sebastian P Straub / Waltraut Mossmann / Jian ...著者: Hironori Takeda / Akihisa Tsutsumi / Tomohiro Nishizawa / Caroline Lindau / Jon V Busto / Lena-Sophie Wenz / Lars Ellenrieder / Kenichiro Imai / Sebastian P Straub / Waltraut Mossmann / Jian Qiu / Yu Yamamori / Kentaro Tomii / Junko Suzuki / Takeshi Murata / Satoshi Ogasawara / Osamu Nureki / Thomas Becker / Nikolaus Pfanner / Nils Wiedemann / Masahide Kikkawa / Toshiya Endo / 要旨: The mitochondrial outer membrane contains so-called β-barrel proteins, which allow communication between the cytosol and the mitochondrial interior. Insertion of β-barrel proteins into the outer ...The mitochondrial outer membrane contains so-called β-barrel proteins, which allow communication between the cytosol and the mitochondrial interior. Insertion of β-barrel proteins into the outer membrane is mediated by the multisubunit mitochondrial sorting and assembly machinery (SAM, also known as TOB). Here we use cryo-electron microscopy to determine the structures of two different forms of the yeast SAM complex at a resolution of 2.8-3.2 Å. The dimeric complex contains two copies of the β-barrel channel protein Sam50-Sam50a and Sam50b-with partially open lateral gates. The peripheral membrane proteins Sam35 and Sam37 cap the Sam50 channels from the cytosolic side, and are crucial for the structural and functional integrity of the dimeric complex. In the second complex, Sam50b is replaced by the β-barrel protein Mdm10. In cooperation with Sam50a, Sam37 recruits and traps Mdm10 by penetrating the interior of its laterally closed β-barrel from the cytosolic side. The substrate-loaded SAM complex contains one each of Sam50, Sam35 and Sam37, but neither Mdm10 nor a second Sam50, suggesting that Mdm10 and Sam50b function as placeholders for a β-barrel substrate released from Sam50a. Our proposed mechanism for dynamic switching of β-barrel subunits and substrate explains how entire precursor proteins can fold in association with the mitochondrial machinery for β-barrel assembly.
履歴
登録
2020年4月3日
登録サイト: PDBJ / 処理サイト: PDBJ
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2021年1月20日
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2021年1月20日
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改定 1.0
2021年1月20日
Data content type: FSC / Data content type: FSC / Provider: repository / タイプ: Initial release
改定 1.0
2021年1月20日
Data content type: Image / Data content type: Image / Provider: repository / タイプ: Initial release
改定 1.0
2021年1月20日
Data content type: Primary map / Data content type: Primary map / Provider: repository / タイプ: Initial release
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