Download MendeleyImplications of a multiscale structure of the yeast nuclear pore complex.
Akey, C.W., Echeverria, I., Ouch, C., Nudelman, I., Shi, Y., Wang, J., Chait, B.T., Sali, A., Fernandez-Martinez, J., Rout, M.P.(2023) Mol Cell 83: 3283-3302.e5
- PubMed: 37738963
- DOI: https://doi.org/10.1016/j.molcel.2023.08.025
- Primary Citation of Related Structures:
8T9L, 8TIE, 8TJ5 - PubMed Abstract:
Nuclear pore complexes (NPCs) direct the nucleocytoplasmic transport of macromolecules. Here, we provide a composite multiscale structure of the yeast NPC, based on improved 3D density maps from cryogenic electron microscopy and AlphaFold2 models. Key features of the inner and outer rings were integrated into a comprehensive model. We resolved flexible connectors that tie together the core scaffold, along with equatorial transmembrane complexes and a lumenal ring that anchor this channel within the pore membrane. The organization of the nuclear double outer ring reveals an architecture that may be shared with ancestral NPCs. Additional connections between the core scaffold and the central transporter suggest that under certain conditions, a degree of local organization is present at the periphery of the transport machinery. These connectors may couple conformational changes in the scaffold to the central transporter to modulate transport. Collectively, this analysis provides insights into assembly, transport, and NPC evolution.
Organizational Affiliation:
Department of Pharmacology, Physiology and Biophysics, Boston University, Chobanian and Avedisian School of Medicine, 700 Albany Street, Boston, MA 02118, USA. Electronic address: cakey@bu.edu.
