Download MendeleyHigh-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, D.J., Vonck, J., Kuhlbrandt, W., Zickermann, V.(2019) Sci Adv 5: eaax9484-eaax9484
- PubMed: 31844670
- DOI: https://doi.org/10.1126/sciadv.aax9484
- Primary Citation of Related Structures:
6RFQ, 6RFR, 6RFS - PubMed Abstract:
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-Å 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.
Organizational Affiliation:
Institute of Biochemistry II, University Hospital, Goethe University, Frankfurt am Main, Germany.
