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Mutations in axonemal dynein assembly factor DNAAF3 cause primary ciliary dyskinesia

Open access
Mitchison, Hannah M, Schmidts, Miriam, Loges, Niki T, Freshour, Judy, Dritsoula, Athina, Hirst, Rob A, O'Callaghan, Christopher, Blau, Hannah, Al Dabbagh, Maha, Olbrich, Heike, Beales, Philip L, Yagi, Toshiki, Mussaffi, Huda, Chung, Eddie M K, Omran, Heymut, Mitchell, David R·2012·Nature Genetics

Abstract

Primary ciliary dyskinesia most often arises from loss of the dynein motors that power ciliary beating. Here we show that DNAAF3 (also known as PF22), a previously uncharacterized protein, is essential for the preassembly of dyneins into complexes before their transport into cilia. We identified loss-of-function mutations in the human DNAAF3 gene in individuals from families with situs inversus and defects in the assembly of inner and outer dynein arms. Knockdown of dnaaf3 in zebrafish likewise disrupts dynein arm assembly and ciliary motility, causing primary ciliary dyskinesia phenotypes that include hydrocephalus and laterality malformations. Chlamydomonas reinhardtii PF22 is exclusively cytoplasmic, and a PF22-null mutant cannot assemble any outer and some inner dynein arms. Altered abundance of dynein subunits in mutant cytoplasm suggests that DNAAF3 (PF22) acts at a similar stage as other preassembly proteins, for example, DNAAF2 (also known as PF13 or KTU) and DNAAF1 (also known as ODA7 or LRRC50), in the dynein preassembly pathway. These results support the existence of a conserved, multistep pathway for the cytoplasmic formation of assembly competent ciliary dynein complexes.

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Metadata

Authors
Mitchison, H. M., Schmidts, M., Loges, N. T., Freshour, J., Dritsoula, A., Hirst, R. A., O'Callaghan, C., Blau, H., Al Dabbagh, M., Olbrich, H., Beales, P. L., Yagi, T., Mussaffi, H., Chung, E. M. K., Omran, H., & Mitchell, D. R.
Venue
Nature Genetics
Published
2012-03-04
Volume
44
Issue
4
Pages
381-389
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2055280361
Cited by
273
References
62
FWCI
14.88
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Mutations in axonemal dynein assembly factor DNAAF3 cause primary ciliary dyskinesia. https://app.cochat.ai/papers/10.1038/ng.1106
The paper
Mitchison, H. M., Schmidts, M., Loges, N. T., Freshour, J., Dritsoula, A., Hirst, R. A., O'Callaghan, C., Blau, H., Al Dabbagh, M., Olbrich, H., Beales, P. L., Yagi, T., Mussaffi, H., Chung, E. M. K., Omran, H., & Mitchell, D. R. (2012). Mutations in axonemal dynein assembly factor DNAAF3 cause primary ciliary dyskinesia. Nature Genetics. https://doi.org/10.1038/ng.1106

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.