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-Structure paper
タイトル | The I1 dynein-associated tether and tether head complex is a conserved regulator of ciliary motility. |
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ジャーナル・号・ページ | Mol Biol Cell, Vol. 29, Issue 9, Page 1048-1059, Year 2018 |
掲載日 | 2018年5月1日 |
著者 | Gang Fu / Qian Wang / Nhan Phan / Paulina Urbanska / Ewa Joachimiak / Jianfeng Lin / Dorota Wloga / Daniela Nicastro / |
PubMed 要旨 | Motile cilia are essential for propelling cells and moving fluids across tissues. The activity of axonemal dynein motors must be precisely coordinated to generate ciliary motility, but their ...Motile cilia are essential for propelling cells and moving fluids across tissues. The activity of axonemal dynein motors must be precisely coordinated to generate ciliary motility, but their regulatory mechanisms are not well understood. The tether and tether head (T/TH) complex was hypothesized to provide mechanical feedback during ciliary beating because it links the motor domains of the regulatory I1 dynein to the ciliary doublet microtubule. Combining genetic and biochemical approaches with cryoelectron tomography, we identified FAP44 and FAP43 (plus the algae-specific, FAP43-redundant FAP244) as T/TH components. WT-mutant comparisons revealed that the heterodimeric T/TH complex is required for the positional stability of the I1 dynein motor domains, stable anchoring of CK1 kinase, and proper phosphorylation of the regulatory IC138-subunit. T/TH also interacts with inner dynein arm d and radial spoke 3, another important motility regulator. The T/TH complex is a conserved regulator of I1 dynein and plays an important role in the signaling pathway that is critical for normal ciliary motility. |
リンク | Mol Biol Cell / PubMed:29514928 / PubMed Central |
手法 | EM (サブトモグラム平均) / EM (トモグラフィー) |
解像度 | 30.0 - 40.0 Å |
構造データ | EMDB-7481: EMDB-7486: EMDB-7487: EMDB-7488: EMDB-7489: |
由来 |
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