- EMDB-24489: The C1b projection within the ciliary central apparatus from the ... -
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データベース: EMDB / ID: EMD-24489
タイトル
The C1b projection within the ciliary central apparatus from the cryo-electron tomography and subtomographic average of isolated Chlamydomonas fap413 mutant axonemes
マップデータ
fap413 mutant C1b projection
試料
細胞器官・細胞要素: The C1b projection within the the ciliary central apparatus from the cryo-electron tomography and subtomographic average of isolated Chlamydomonas wild type axonemes
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01GM083122
米国
Cancer Prevention and Research Institute of Texas (CPRIT)
RR140082
米国
引用
ジャーナル: J Cell Sci / 年: 2021 タイトル: Structural organization of the C1b projection within the ciliary central apparatus. 著者: Kai Cai / Yanhe Zhao / Lei Zhao / Nhan Phan / Yuqing Hou / Xi Cheng / George B Witman / Daniela Nicastro / 要旨: Motile cilia have a '9+2' structure containing nine doublet microtubules and a central apparatus (CA) composed of two singlet microtubules with associated projections. The CA plays crucial roles in ...Motile cilia have a '9+2' structure containing nine doublet microtubules and a central apparatus (CA) composed of two singlet microtubules with associated projections. The CA plays crucial roles in regulating ciliary motility. Defects in CA assembly or function usually result in motility-impaired or paralyzed cilia, which in humans causes disease. Despite their importance, the protein composition and functions of most CA projections remain largely unknown. Here, we combined genetic, proteomic and cryo-electron tomographic approaches to compare the CA of wild-type Chlamydomonas reinhardtii with those of three CA mutants. Our results show that two proteins, FAP42 and FAP246, are localized to the L-shaped C1b projection of the CA, where they interact with the candidate CA protein FAP413. FAP42 is a large protein that forms the peripheral 'beam' of the C1b projection, and the FAP246-FAP413 subcomplex serves as the 'bracket' between the beam (FAP42) and the C1b 'pillar' that attaches the projection to the C1 microtubule. The FAP246-FAP413-FAP42 complex is essential for stable assembly of the C1b, C1f and C2b projections, and loss of these proteins leads to ciliary motility defects.
A: 277.288 Å / B: 270.986 Å / C: 289.892 Å α=β=γ: 90.0 °
CCP4マップ ヘッダ情報:
mode
Image stored as Reals
Å/pix. X/Y/Z
3.151
3.151
3.151
M x/y/z
88
86
92
origin x/y/z
0.000
0.000
0.000
length x/y/z
277.288
270.986
289.892
α/β/γ
90.000
90.000
90.000
start NX/NY/NZ
0
0
0
NX/NY/NZ
320
320
320
MAP C/R/S
1
2
3
start NC/NR/NS
-101
-93
-179
NC/NR/NS
88
86
92
D min/max/mean
115.648
135.802
126.806
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添付データ
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試料の構成要素
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全体 : The C1b projection within the the ciliary central apparatus from ...
全体
名称: The C1b projection within the the ciliary central apparatus from the cryo-electron tomography and subtomographic average of isolated Chlamydomonas wild type axonemes
要素
細胞器官・細胞要素: The C1b projection within the the ciliary central apparatus from the cryo-electron tomography and subtomographic average of isolated Chlamydomonas wild type axonemes
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超分子 #1: The C1b projection within the the ciliary central apparatus from ...
超分子
名称: The C1b projection within the the ciliary central apparatus from the cryo-electron tomography and subtomographic average of isolated Chlamydomonas wild type axonemes タイプ: organelle_or_cellular_component / ID: 1 / 親要素: 0