Human IFT-A complex structures provide molecular insights into ciliary transport.
Human IFT-A complex structures provide molecular insights into ciliary transport.
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DOI:
10.1038/s41422-023-00778-3
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发表时间:
2023-04
期刊:
影响因子:
44.1
通讯作者:
Sun, Ji
中科院分区:
文献类型:
--
作者:
Jiang, Meiqin;Palicharla, Vivek Reddy;Miller, Darcie;Hwang, Sun-Hee;Zhu, Hanwen;Hixson, Patricia;Mukhopadhyay, Saikat;Sun, Ji
Intraflagellar transport (IFT) complexes, IFT-A and IFT-B, form bidirectional trains that move along the axonemal microtubules and are essential for assembling and maintaining cilia. Mutations in IFT subunits lead to numerous ciliopathies involving multiple tissues. However, how IFT complexes assemble and mediate cargo transport lacks mechanistic understanding due to missing high-resolution structural information of the holo-complexes. Here we report cryo-EM structures of human IFT-A complexes in the presence and absence of TULP3 at overall resolutions of 3.0–3.9 Å. IFT-A adopts a “lariat” shape with interconnected core and peripheral subunits linked by structurally vital zinc-binding domains. TULP3, the cargo adapter, interacts with IFT-A through its N-terminal region, and interface mutations disrupt cargo transport. We also determine the molecular impacts of disease mutations on complex formation and ciliary transport. Our work reveals IFT-A architecture, sheds light on ciliary transport and IFT train formation, and enables the rationalization of disease mutations in ciliopathies.
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影响因子:
14.8
作者:
通讯作者:
--
影响因子:
4.5
作者:
Jensen VL;Bialas NJ;Bishop-Hurley SL;Molday LL;Kida K;Nguyen PA;Blacque OE;Molday RS;Leroux MR;Riddle DL
通讯作者:
Riddle DL
DOI:
10.1083/jcb.141.4.993
发表时间:
1998-05-18
期刊:
The Journal of cell biology
影响因子:
--
作者:
Cole DG;Diener DR;Himelblau AL;Beech PL;Fuster JC;Rosenbaum JL
通讯作者:
Rosenbaum JL
DOI:
10.1107/s0907444909042073
发表时间:
2010-01
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Chen VB;Arendall WB 3rd;Headd JJ;Keedy DA;Immormino RM;Kapral GJ;Murray LW;Richardson JS;Richardson DC
通讯作者:
Richardson DC
影响因子:
4
作者:
Jordan, Mareike A.;Pigino, Gaia
通讯作者:
Pigino, Gaia