Evidence map›Paper›PMID 30850601›Full record

ArticleNature communications2019

Inner lumen proteins stabilize doublet microtubules in cilia and flagella.

Mikito Owa, Takayuki Uchihashi, Haru-Aki Yanagisawa, Takashi Yamano, Hiro Iguchi, Hideya Fukuzawa, Ken-Ichi Wakabayashi, Toshio Ando, Masahide Kikkawa

Open access · goldAbstract read
In one paragraph

Article in Nature communications, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed
9.4field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

75 citing papers in PubMed, 147 citations in OpenAlex.

  1. Article
  2. Article
  3. Microtubule inner proteins in apicomplexan parasites.Biochemical Society transactions · 2026
    Review
  4. Review
  5. Cryo-EM single-particle analysis expanding towards increasingly native samples.Acta crystallographica. Section D, Structural biology · 2025
    Review
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Microtubule inner proteins ofProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  12. Review
  13. Article
  14. Article
  15. FAP20 is required for flagellum assembly inMolecular biology of the cell · 2024
    Article
  16. Article
  17. Structural determination and modeling of ciliary microtubules.Acta crystallographica. Section D, Structural biology · 2024
    Review
  18. Article
  19. Article
  20. FAP20 is required for flagellum assembly inbioRxiv : the preprint server for biology · 2024
    Article

15 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 5 institutions in 1 country.

Mikito OwaDepartment of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo, 113-0033, Japan.
Takayuki UchihashiDepartment of Physics and Structural Biology Research Center, Chikusa-ku, Nagoya University, Nagoya, 464-8602, Japan.ORCID http://orcid.org/0000-0002-0263-5312
Haru-Aki YanagisawaDepartment of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo, 113-0033, Japan.
Takashi YamanoGraduate School of Biostudies, Kyoto University, Kyoto, 606-8502, Japan.
Hiro IguchiGraduate School of Biostudies, Kyoto University, Kyoto, 606-8502, Japan.
Hideya FukuzawaGraduate School of Biostudies, Kyoto University, Kyoto, 606-8502, Japan.
Ken-Ichi WakabayashiLaboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama, 226-8503, Japan.
Toshio AndoWPI Nano Life Science Institute, Kanazawa University, Kakuma, Kanazawa, 920-1192, Japan.ORCID http://orcid.org/0000-0001-8819-154X
Masahide KikkawaDepartment of Cell Biology and Anatomy, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo Bunkyo-ku, Tokyo, 113-0033, Japan. mkikkawa@m.u-tokyo.ac.jp.ORCID http://orcid.org/0000-0001-7656-8194
Kyoto University · JPThe University of Tokyo · JPKanazawa University · JPNagoya University · JPTokyo Institute of Technology · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Motile cilia are microtubule-based organelles that play important roles in most eukaryotes. Although axonemal microtubules are sufficiently stable to withstand their beating motion, it remains unknown how they are stabilized while serving as tracks for axonemal dyneins. To address this question, we have identified two uncharacterized proteins, FAP45 and FAP52, as microtubule inner proteins (MIPs) in Chlamydomonas. These proteins are conserved among eukaryotes with motile cilia. Using cryo-electron tomography (cryo-ET) and high-speed atomic force microscopy (HS-AFM), we show that lack of these proteins leads to a loss of inner protrusions in B-tubules and less stable microtubules. These protrusions are located near the inner junctions of doublet microtubules and lack of both FAP52 and a known inner junction protein FAP20 results in detachment of the B-tubule from the A-tubule, as well as flagellar shortening. These results demonstrate that FAP45 and FAP52 bind to the inside of microtubules and stabilize ciliary axonemes.

Indexed as

Algal ProteinsAxonemal DyneinsAxonemeChlamydomonas reinhardtiiCiliaCryoelectron MicroscopyElectron Microscope TomographyFlagellaGene ExpressionMicroscopy, Atomic ForceAlgal ProteinsAxonemal Dyneins

Identifiers

PMID30850601
PMCPMC6408466
OpenAlexW2885457519

What OpenQuestion holds

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LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.