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The path of pre-ribosomes through the nuclear pore complex revealed by electron tomography

Author

Listed:
  • Franck Delavoie

    (Université de Toulouse, CNRS, UPS)

  • Vanessa Soldan

    (Université de Toulouse, CNRS, UPS)

  • Dana Rinaldi

    (Université de Toulouse, CNRS, UPS)

  • Jean-Yves Dauxois

    (Université de Toulouse, CNRS, INSA)

  • Pierre-Emmanuel Gleizes

    (Université de Toulouse, CNRS, UPS
    Université de Toulouse, CNRS, UPS)

Abstract

Determining the path of single ribonucleoprotein (RNP) particles through the 100 nm-wide nuclear pore complex (NPC) by fluorescence microscopy remains challenging due to resolution limitation and RNP labeling constraints. By using high-pressure freezing and electron tomography, here we captured snapshots of the translocation of native RNP particles through NPCs in yeast and analyzed their trajectory at nanometer-scale resolution. Morphological and functional analyses indicate that these particles mostly correspond to pre-ribosomes. They are detected in 5–6% of the NPCs, with no apparent bias for NPCs adjacent to the nucleolus. Their path closely follows the central axis of the NPC through the nuclear and inner rings, but diverges at the cytoplasmic ring, suggesting interactions with the cytoplasmic nucleoporins. By applying a probabilistic queueing model to our data, we estimated that the dwell time of pre-ribosomes in the yeast NPC is ~90 ms. These data reveal distinct steps of pre-ribosome translocation through the NPC.

Suggested Citation

  • Franck Delavoie & Vanessa Soldan & Dana Rinaldi & Jean-Yves Dauxois & Pierre-Emmanuel Gleizes, 2019. "The path of pre-ribosomes through the nuclear pore complex revealed by electron tomography," Nature Communications, Nature, vol. 10(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-08342-7
    DOI: 10.1038/s41467-019-08342-7
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    Cited by:

    1. Eszter E. Najbauer & Sheung Chun Ng & Christian Griesinger & Dirk Görlich & Loren B. Andreas, 2022. "Atomic resolution dynamics of cohesive interactions in phase-separated Nup98 FG domains," Nature Communications, Nature, vol. 13(1), pages 1-16, December.
    2. Sheung Chun Ng & Dirk Görlich, 2022. "A simple thermodynamic description of phase separation of Nup98 FG domains," Nature Communications, Nature, vol. 13(1), pages 1-17, December.
    3. Sheung Chun Ng & Abin Biswas & Trevor Huyton & Jürgen Schünemann & Simone Reber & Dirk Görlich, 2023. "Barrier properties of Nup98 FG phases ruled by FG motif identity and inter-FG spacer length," Nature Communications, Nature, vol. 14(1), pages 1-17, December.
    4. Jan Andreas Ruland & Annika Marie Krüger & Kerstin Dörner & Rohan Bhatia & Sabine Wirths & Daniel Poetes & Ulrike Kutay & Jan Peter Siebrasse & Ulrich Kubitscheck, 2021. "Nuclear export of the pre-60S ribosomal subunit through single nuclear pores observed in real time," Nature Communications, Nature, vol. 12(1), pages 1-12, December.

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