6rfr

Cryo-EM structure of respiratory complex I from Yarrowia lipolytica at 3.2 A resolution

Loading... Status: waiting for Mol* initialization Structural highlights 6rfr is a 10 chain structure with sequence from Yarrowia lipolytica. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 3.2Å Ligands: 3PE, CDL, CPL, FES, FMN, LMN, NDP, PLC, T7X, UQ9, ZMP, ZN Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function F2Z6F1_YARLI Publication Abstract from PubMed Respiratory complex I is a redox-driven proton pump, accounting for a large part of the electrochemical gradient that powers mitochondrial adenosine triphosphate synthesis. Complex I dysfunction is associated with severe human diseases. Assembly of the one-megadalton complex I in the inner mitochondrial membrane requires assembly factors and chaperones. We have determined the structure of complex I from the aerobic yeast Yarrowia lipolytica by electron cryo-microscopy at 3.2-A resolution. A ubiquinone molecule was identified in the access path to the active site. The electron cryo-microscopy structure indicated an unusual lipid-protein arrangement at the junction of membrane and matrix arms that was confirmed by molecular simulations. The structure of a complex I mutant and an assembly intermediate provide detailed molecular insights into the cause of a hereditary complex I-linked disease and complex I assembly in the inner mitochondrial membrane. High-resolution cryo-EM structures of respiratory complex I: Mechanism, assembly, and disease.,Parey K, Haapanen O, Sharma V, Kofeler H, Zullig T, Prinz S, Siegmund K, Wittig I, Mills DJ, Vonck J, Kuhlbrandt W, Zickermann V Sci Adv. 2019 Dec 11;5(12):eaax9484. doi: 10.1126/sciadv.aax9484. eCollection, 2019 Dec. PMID:31844670 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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