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-Structure paper
タイトル | Cartwheel architecture of Trichonympha basal body. |
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ジャーナル・号・ページ | Science, Vol. 337, Issue 6094, Page 553, Year 2012 |
掲載日 | 2012年8月3日 |
![]() | Paul Guichard / Ambroise Desfosses / Aditi Maheshwari / Virginie Hachet / Carsten Dietrich / Andreas Brune / Takashi Ishikawa / Carsten Sachse / Pierre Gönczy / ![]() |
PubMed 要旨 | Centrioles and basal bodies are essential for the formation of cilia, flagella, and centrosomes. They exhibit a characteristic ninefold symmetry imparted by a cartwheel thought to contain rings of ...Centrioles and basal bodies are essential for the formation of cilia, flagella, and centrosomes. They exhibit a characteristic ninefold symmetry imparted by a cartwheel thought to contain rings of SAS-6 proteins. We used cryoelectron tomography to investigate the architecture of the exceptionally long cartwheel of the flagellate Trichonympha. We found that the cartwheel is a stack of central rings that exhibit a vertical periodicity of 8.5 nanometers and is able to accommodate nine SAS-6 homodimers. The spokes that emanate from two such rings associate into a layer, with a vertical periodicity of 17 nanometers on the cartwheel margin. Thus, by using the power of biodiversity, we unveiled the architecture of the cartwheel at the root of the ninefold symmetry of centrioles and basal bodies. |
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手法 | EM (サブトモグラム平均) |
解像度 | 45.0 Å |
構造データ | ![]() EMDB-2094: |
由来 |
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