Structures of radial spokes and associated complexes important for ciliary motility.
Structures of radial spokes and associated complexes important for ciliary motility.
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DOI:
10.1038/s41594-020-00530-0
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发表时间:
2021-01
影响因子:
16.8
通讯作者:
Brown A
中科院分区:
文献类型:
--
作者:
Gui M;Ma M;Sze-Tu E;Wang X;Koh F;Zhong ED;Berger B;Davis JH;Dutcher SK;Zhang R;Brown A
In motile cilia, a mechanoregulatory network is responsible for converting the action of thousands of dynein motors bound to doublet microtubules into a single propulsive waveform. Here, we use two complementary cryo-EM strategies to determine structures of the major mechanoregulators that bind ciliary doublet microtubules in Chlamydomonas reinhardtii. We determine structures of isolated radial spoke RS1, and the microtubule-bound RS1, RS2, and the nexin-dynein regulatory complex. From these structures, we identify and build atomic models for 30 proteins including 23 radial-spoke subunits. We reveal how mechanoregulatory complexes dock to doublet microtubules with regular 96-nm periodicity and communicate with one another. Additionally, we observe a direct and dynamically coupled association between RS2 and the dynein motor IDAc, providing a molecular basis for the control of motor activity by mechanical signals. These structures advance our understanding of the role of mechanoregulation in defining the ciliary waveform.
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DOI:
10.1083/jcb.201111041
发表时间:
2012-07-09
期刊:
The Journal of cell biology
影响因子:
--
作者:
Gupta A;Diener DR;Sivadas P;Rosenbaum JL;Yang P
通讯作者:
Yang P
影响因子:
56.9
作者:
Faubel, Regina;Westendorf, Christian;Eichele, Gregor
通讯作者:
Eichele, Gregor
DOI:
10.1107/s2059798318006551
发表时间:
2018-06-01
期刊:
Acta crystallographica. Section D, Structural biology
影响因子:
--
作者:
Afonine PV;Poon BK;Read RJ;Sobolev OV;Terwilliger TC;Urzhumtsev A;Adams PD
通讯作者:
Adams PD
影响因子:
9.8
作者:
El Khouri, Elma;Thomas, Lucie;Amselem, Serge
通讯作者:
Amselem, Serge
影响因子:
7.2
作者:
Ishikawa, Takashi
通讯作者:
Ishikawa, Takashi