- PDB-5o8o: N. crassa Tom40 model based on cryo-EM structure of the TOM core ... -
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データベース: PDB / ID: 5o8o
タイトル
N. crassa Tom40 model based on cryo-EM structure of the TOM core complex at 6.8 A
要素
Mitochondrial import receptor subunit tom40
キーワード
PROTEIN TRANSPORT / TOM-Complex / Protein Import / Mitochondria / Cryo-EM
機能・相同性
機能・相同性情報
mitochondrial outer membrane translocase complex / protein import into mitochondrial matrix / porin activity / pore complex / protein insertion into mitochondrial outer membrane / protein transmembrane transporter activity / monoatomic ion transport 類似検索 - 分子機能
ジャーナル: Cell / 年: 2017 タイトル: Cryo-EM Structure of the TOM Core Complex from Neurospora crassa. 著者: Thomas Bausewein / Deryck J Mills / Julian D Langer / Beate Nitschke / Stephan Nussberger / Werner Kühlbrandt / 要旨: The TOM complex is the main entry gate for protein precursors from the cytosol into mitochondria. We have determined the structure of the TOM core complex by cryoelectron microscopy (cryo-EM). The ...The TOM complex is the main entry gate for protein precursors from the cytosol into mitochondria. We have determined the structure of the TOM core complex by cryoelectron microscopy (cryo-EM). The complex is a 148 kDa symmetrical dimer of ten membrane protein subunits that create a shallow funnel on the cytoplasmic membrane surface. In the core of the dimer, the β-barrels of the Tom40 pore form two identical preprotein conduits. Each Tom40 pore is surrounded by the transmembrane segments of the α-helical subunits Tom5, Tom6, and Tom7. Tom22, the central preprotein receptor, connects the two Tom40 pores at the dimer interface. Our structure offers detailed insights into the molecular architecture of the mitochondrial preprotein import machinery.