Download MendeleyHigh-resolution cryo-EM analysis of the yeast ATP synthase in a lipid membrane.
Srivastava, A.P., Luo, M., Zhou, W., Symersky, J., Bai, D., Chambers, M.G., Faraldo-Gomez, J.D., Liao, M., Mueller, D.M.(2018) Science 360
- PubMed: 29650704
- DOI: https://doi.org/10.1126/science.aas9699
- Primary Citation of Related Structures:
6CP3, 6CP5, 6CP6, 6CP7 - PubMed Abstract:
Mitochondrial adenosine triphosphate (ATP) synthase comprises a membrane embedded F o motor that rotates to drive ATP synthesis in the F 1 subunit. We used single-particle cryo-electron microscopy (cryo-EM) to obtain structures of the full complex in a lipid bilayer in the absence or presence of the inhibitor oligomycin at 3.6- and 3.8-angstrom resolution, respectively. To limit conformational heterogeneity, we locked the rotor in a single conformation by fusing the F6 subunit of the stator with the δ subunit of the rotor. Assembly of the enzyme with the F6-δ fusion caused a twisting of the rotor and a 9° rotation of the F o c 10 -ring in the direction of ATP synthesis, relative to the structure of isolated F o Our cryo-EM structures show how F 1 and F o are coupled, give insight into the proton translocation pathway, and show how oligomycin blocks ATP synthesis.
Organizational Affiliation:
Department of Biological Chemistry and Molecular Biology, Chicago Medical School, Rosalind Franklin University, 3333 Green Bay Road, North Chicago, IL 60064, USA.
