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The molecular structure of mammalian primary cilia revealed by cryo-electron tomography
P. Kiesel, G. Alvarez Viar, N. Tsoy, R. Maraspini, P. Gorilak, V. Varga, A. Honigmann, G. Pigino
Jazyk angličtina Země Spojené státy americké
Typ dokumentu časopisecké články, práce podpořená grantem
NLK
ProQuest Central
od 2004-01-01 do Před 1 rokem
Health & Medicine (ProQuest)
od 2004-01-01 do Před 1 rokem
- MeSH
- buněčné kultury MeSH
- buňky MDCK MeSH
- Chlamydomonas metabolismus ultrastruktura MeSH
- cilie metabolismus ultrastruktura MeSH
- elektronová kryomikroskopie MeSH
- exprese genu MeSH
- lidé MeSH
- mikrofilamenta metabolismus ultrastruktura MeSH
- mikrotubuly metabolismus ultrastruktura MeSH
- proteiny asociované s mikrotubuly genetika metabolismus MeSH
- psi MeSH
- tomografie elektronová MeSH
- zvířata MeSH
- Check Tag
- lidé MeSH
- psi MeSH
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
Primary cilia are microtubule-based organelles that are important for signaling and sensing in eukaryotic cells. Unlike the thoroughly studied motile cilia, the three-dimensional architecture and molecular composition of primary cilia are largely unexplored. Yet, studying these aspects is necessary to understand how primary cilia function in health and disease. We developed an enabling method for investigating the structure of primary cilia isolated from MDCK-II cells at molecular resolution by cryo-electron tomography. We show that the textbook '9 + 0' arrangement of microtubule doublets is only present at the primary cilium base. A few microns out, the architecture changes into an unstructured bundle of EB1-decorated microtubules and actin filaments, putting an end to a long debate on the presence or absence of actin filaments in primary cilia. Our work provides a plethora of insights into the molecular structure of primary cilia and offers a methodological framework to study these important organelles.
Institute of Molecular Genetics of the Czech Academy of Sciences Prague Czech Republic
Max Planck Institute of Molecular Cell Biology and Genetics Dresden Germany
Citace poskytuje Crossref.org
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