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-Structure paper
| タイトル | Structures of TOM complexes with bound preproteins. |
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| ジャーナル・号・ページ | Proc Natl Acad Sci U S A, Vol. 122, Issue 29, Page e2507279122, Year 2025 |
| 掲載日 | 2025年7月22日 |
著者 | Ahmed-Noor A Agip / Pamela Ornelas / Tzu-Jing Yang / Ermanno Uboldi / Sabine Häder / Melanie A McDowell / Werner Kühlbrandt / ![]() |
| PubMed 要旨 | Mitochondria import most of their proteins from the cytoplasm through the TOM complex. Preproteins containing targeting signals are recognized by the TOM receptor subunits and translocated by Tom40 ...Mitochondria import most of their proteins from the cytoplasm through the TOM complex. Preproteins containing targeting signals are recognized by the TOM receptor subunits and translocated by Tom40 across the outer mitochondrial membrane. We present four structures of the preprotein-bound and preprotein-free TOM core and holo complexes from the thermophilic fungus , obtained by single-particle electron cryomicroscopy. Our structures reveal the symmetric arrangement of two copies of the Tom20 receptor subunit in the TOM holo complex. Several different conformations of Tom20 within the TOM holo complex highlight the dynamic nature of the receptor. The structure of preprotein-bound Tom20 provides insight into the early stages of protein translocation. |
リンク | Proc Natl Acad Sci U S A / PubMed:40674418 / PubMed Central |
| 手法 | EM (単粒子) |
| 解像度 | 2.7 - 3.8 Å |
| 構造データ | EMDB-52652, PDB-9i6b: EMDB-52658, PDB-9i7p: EMDB-52660, PDB-9i7s: EMDB-52661, PDB-9i7t: |
| 化合物 | ![]() ChemComp-PC1: ![]() ChemComp-DU0: ![]() ChemComp-PLC: |
| 由来 |
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キーワード | MEMBRANE PROTEIN / Mitochondria |
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thermochaetoides thermophila dsm 1495 (菌類)
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