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TitleNuclear pore permeability and fluid flow are modulated by its dilation state.
Journal, issue, pagesMol Cell, Year 2024
Publish dateDec 19, 2024
AuthorsPatrick C Hoffmann / Hyuntae Kim / Agnieszka Obarska-Kosinska / Jan Philipp Kreysing / Eli Andino-Frydman / Sergio Cruz-León / Erica Margiotta / Lenka Cernikova / Jan Kosinski / Beata Turoňová / Gerhard Hummer / Martin Beck /
PubMed AbstractChanging environmental conditions necessitate rapid adaptation of cytoplasmic and nuclear volumes. We use the slime mold Dictyostelium discoideum, known for its ability to tolerate extreme changes in ...Changing environmental conditions necessitate rapid adaptation of cytoplasmic and nuclear volumes. We use the slime mold Dictyostelium discoideum, known for its ability to tolerate extreme changes in osmolarity, to assess which role nuclear pore complexes (NPCs) play in achieving nuclear volume adaptation and relieving mechanical stress. We capitalize on the unique properties of D. discoideum to quantify fluid flow across NPCs. D. discoideum has an elaborate NPC structure in situ. Its dilation state affects NPC permeability for nucleocytosolic flow. Based on mathematical concepts adapted from hydrodynamics, we conceptualize this phenomenon as porous flow across NPCs, which is distinct from canonically characterized modes of nucleocytoplasmic transport because of its dependence on pressure. Viral NPC blockage decreased nucleocytosolic flow. Our results may be relevant for any biological conditions that entail rapid nuclear size adaptation, including metastasizing cancer cells, migrating cells, or differentiating tissues.
External linksMol Cell / PubMed:39729993
MethodsEM (subtomogram averaging) / EM (tomography)
Resolution4.5 - 40.0 Å
Structure data

EMDB-19137: Composite structure of the Dictyostelium discoideum nuclear pore complex in cells
PDB-9hcj: D. discoideum nuclear pore complex
Method: EM (subtomogram averaging) / Resolution: 30.0 Å

EMDB-19139: Asymmetric subunit of the Dictyostelium discoideum nuclear pore complex
Method: EM (subtomogram averaging) / Resolution: 36.0 Å

EMDB-19140: Inner ring segment of the Dictyostelium discoideum nuclear pore complex
Method: EM (subtomogram averaging) / Resolution: 25.0 Å

EMDB-19141: Cytoplasmic ring segment of the Dictyostelium discoideum nuclear pore complex
Method: EM (subtomogram averaging) / Resolution: 26.0 Å

EMDB-19142: Nuclear ring segment of the Dictyostelium discoideum nuclear pore complex
Method: EM (subtomogram averaging) / Resolution: 23.0 Å

EMDB-19143: Lumenal ring segment of the Dictyostelium discoideum nuclear pore complex
Method: EM (subtomogram averaging) / Resolution: 27.0 Å

EMDB-19144: Nuclear ring segment focused around the basket connection of the Dictyostelium discoideum nuclear pore complex
Method: EM (subtomogram averaging) / Resolution: 24.0 Å

EMDB-19149: Composite structure of the Dictyostelium discoideum nuclear pore complex in cells - control condition
Method: EM (subtomogram averaging) / Resolution: 33.0 Å

EMDB-19152: Asymmetric subunit of the Dictyostelium discoideum nuclear pore complex - control condition
Method: EM (subtomogram averaging) / Resolution: 33.0 Å

EMDB-19155: Composite structure of the Dictyostelium discoideum nuclear pore complex in cells - hyperosmotic stress
Method: EM (subtomogram averaging) / Resolution: 38.0 Å

EMDB-19156: Asymmetric subunit of the Dictyostelium discoideum nuclear pore complex - hyperosmotic stress
Method: EM (subtomogram averaging) / Resolution: 38.0 Å

EMDB-19157: Composite structure of the Dictyostelium discoideum nuclear pore complex in cells - hypoosmotic stress
Method: EM (subtomogram averaging) / Resolution: 37.0 Å

EMDB-19158: Asymmetric subunit of the Dictyostelium discoideum nuclear pore complex - hypoosmotic stress
Method: EM (subtomogram averaging) / Resolution: 37.0 Å

EMDB-51989: Inner ring segment of the Dictyostelium discoideum NPC - control condition
Method: EM (subtomogram averaging) / Resolution: 33.0 Å

EMDB-51990: Cytoplasmic ring segment of the Dictyostelium discoideum NPC - control condition
Method: EM (subtomogram averaging) / Resolution: 33.0 Å

EMDB-51991: Nuclear ring segment of the Dictyostelium discoideum NPC - control condition
Method: EM (subtomogram averaging) / Resolution: 33.0 Å

EMDB-51992: Lumenal ring segment of the Dictyostelium discoideum NPC - control condition
Method: EM (subtomogram averaging) / Resolution: 33.0 Å

EMDB-51993: Nuclear ring segment focused around the basket connection of the Dictyostelium discoideum NPC - control condition
Method: EM (subtomogram averaging) / Resolution: 33.0 Å

EMDB-51994: Inner ring segment of the Dictyostelium discoideum NPC - hyperosmotic stress
Method: EM (subtomogram averaging) / Resolution: 38.0 Å

EMDB-51995: Cytoplasmic ring segment of the Dictyostelium discoideum NPC - hyperosmotic stress
Method: EM (subtomogram averaging) / Resolution: 38.0 Å

EMDB-51996: Nuclear ring segment of the Dictyostelium discoideum NPC - hyperosmotic stress
Method: EM (subtomogram averaging) / Resolution: 38.0 Å

EMDB-51997: Lumenal ring segment of the Dictyostelium discoideum NPC - hyperosmotic stress
Method: EM (subtomogram averaging) / Resolution: 38.0 Å

EMDB-51998: Nuclear ring segment focused around the basket connection of the Dictyostelium discoideum NPC - hyperosmotic stress
Method: EM (subtomogram averaging) / Resolution: 38.0 Å

EMDB-51999: Inner ring segment of the Dictyostelium discoideum NPC - hypoosmotic stress
Method: EM (subtomogram averaging) / Resolution: 40.0 Å

EMDB-52000: Cytoplasmic ring segment of the Dictyostelium discoideum NPC - hypoosmotic stress
Method: EM (subtomogram averaging) / Resolution: 40.0 Å

EMDB-52001: Nuclear ring segment of the Dictyostelium discoideum NPC - hypoosmotic stress
Method: EM (subtomogram averaging) / Resolution: 40.0 Å

EMDB-52002: Lumenal ring segment of the Dictyostelium discoideum NPC - hypoosmotic stress
Method: EM (subtomogram averaging) / Resolution: 40.0 Å

EMDB-52003: Nuclear ring segment focused around the basket connection of the Dictyostelium discoideum NPC - hypoosmotic stress
Method: EM (subtomogram averaging) / Resolution: 40.0 Å

EMDB-52053: Cryo-tomogram of Dictyostelium discoideum cell - control condition (HL5), related to Figure 1b
Method: EM (tomography)

EMDB-52054: Cryo-tomogram of Dictyostelium discoideum cell - hyperosmotic stress condition (+0.4 M sorbitol), related to Figure 1b
Method: EM (tomography)

EMDB-52055: Cryo-tomogram of Dictyostelium discoideum cell - hypoosmotic stress condition (distilled water), related to Figure 1b
Method: EM (tomography)

EMDB-52057: In situ Dictyostelium discoideum 80S ribosome - hyperosmotic stress condition
Method: EM (subtomogram averaging) / Resolution: 4.5 Å

EMDB-52058: In situ Dictyostelium discoideum 80S ribosome - hypoosmotic stress condition
Method: EM (subtomogram averaging) / Resolution: 5.9 Å

Source
  • Dictyostelium discoideum AX2 (eukaryote)
  • dictyostelium discoideum (eukaryote)
KeywordsNUCLEAR PROTEIN / Nuclear pore complex

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