- EMDB-9022: Three-dimensional architecture of epithelial primary cilia -
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基本情報
登録情報
データベース: EMDB / ID: EMD-9022
タイトル
Three-dimensional architecture of epithelial primary cilia
マップデータ
3D map of a typical primary cilium of IMCD3 cell obtained by electron tomography of serial sections. Best to use contour level 50 with the hide-dust in UCSF Chimera for isosurface volume rending.
ジャーナル: Proc Natl Acad Sci U S A / 年: 2019 タイトル: Three-dimensional architecture of epithelial primary cilia. 著者: Shufeng Sun / Rebecca L Fisher / Samuel S Bowser / Brian T Pentecost / Haixin Sui / 要旨: We report a complete 3D structural model of typical epithelial primary cilia based on structural maps of full-length primary cilia obtained by serial section electron tomography. Our data demonstrate ...We report a complete 3D structural model of typical epithelial primary cilia based on structural maps of full-length primary cilia obtained by serial section electron tomography. Our data demonstrate the architecture of primary cilia differs extensively from the commonly acknowledged 9+0 paradigm. The axoneme structure is relatively stable but gradually evolves from base to tip with a decreasing number of microtubule complexes (MtCs) and a reducing diameter. The axonemal MtCs are cross-linked by previously unrecognized fibrous protein networks. Such an architecture explains why primary cilia can elastically withstand liquid flow for mechanosensing. The nine axonemal MtCs in a cilium are found to differ significantly in length indicating intraflagellar transport processes in primary cilia may be more complicated than that reported for motile cilia. The 3D maps of microtubule doublet-singlet transitions generally display longitudinal gaps at the inner junction between the A- and B-tubules, which indicates the inner junction protein is a major player in doublet-singlet transitions. In addition, vesicles releasing from kidney primary cilia were observed in the structural maps, supporting that ciliary vesicles budding may serve as ectosomes for cell-cell communication.
ダウンロード / ファイル: emd_9022.map.gz / 形式: CCP4 / 大きさ: 2.2 GB / タイプ: IMAGE STORED AS SIGNED BYTE
注釈
3D map of a typical primary cilium of IMCD3 cell obtained by electron tomography of serial sections. Best to use contour level 50 with the hide-dust in UCSF Chimera for isosurface volume rending.
ボクセルのサイズ
X=Y=Z: 1.34128 Å
密度
最小 - 最大
0.0 - 127.0
平均 (標準偏差)
40.341090000000001 (±5.791671)
対称性
空間群: 1
詳細
EMDB XML:
マップ形状
Axis order
X
Y
Z
Origin
-1146
-1440
119
サイズ
960
960
2561
Spacing
960
960
2561
セル
A: 1287.6288 Å / B: 1287.6288 Å / C: 3435.018 Å α=β=γ: 90.0 °
CCP4マップ ヘッダ情報:
mode
envelope stored as signed bytes (from -128 lowest to 127 highest)
Å/pix. X/Y/Z
1.3412802083333
1.3412802083333
1.3412799687622
M x/y/z
960
960
2561
origin x/y/z
0.000
0.000
0.000
length x/y/z
1287.629
1287.629
3435.018
α/β/γ
90.000
90.000
90.000
start NX/NY/NZ
0
0
0
NX/NY/NZ
513
513
513
MAP C/R/S
1
2
3
start NC/NR/NS
-1440
-1146
119
NC/NR/NS
960
960
2561
D min/max/mean
0.000
127.000
40.341
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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 : Primary cilium #G
全体
名称: Primary cilium #G
要素
細胞器官・細胞要素: Primary cilium #G
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超分子 #1: Primary cilium #G
超分子
名称: Primary cilium #G / タイプ: organelle_or_cellular_component / ID: 1 / 親要素: 0 詳細: IMCD3 primary cilium #G is related to Fig. S3g, Fig.S4g and movies 1-5
タイプ: POSITIVE / 材質: uranyl acetate, lead citrate 詳細: 2% uranyl acetate and Reynolds lead citrate solution
糖包埋
材質: epoxy resin 詳細: The samples were infiltrated with a graded series of resins (SPI-PON 812, SPI-CHEM, USA) in acetone over 24 hours. After infiltration with pure resin (3 x within 24 hours), the specimens in ...詳細: The samples were infiltrated with a graded series of resins (SPI-PON 812, SPI-CHEM, USA) in acetone over 24 hours. After infiltration with pure resin (3 x within 24 hours), the specimens in resin were polymerized at 60 degrees C for 2 days.