Title |
A variable undecad repeat domain in cavin1 regulates caveola formation and stability
|
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Published in |
EMBO Reports, July 2018
|
DOI | 10.15252/embr.201845775 |
Pubmed ID | |
Authors |
Vikas A Tillu, Ye‐Wheen Lim, Oleksiy Kovtun, Sergey Mureev, Charles Ferguson, Michele Bastiani, Kerrie‐Ann McMahon, Harriet P Lo, Thomas E Hall, Kirill Alexandrov, Brett M Collins, Robert G Parton |
Abstract |
Caveolae are plasma membrane invaginations involved in transport, signalling and mechanical membrane sensing in metazoans. Their formation depends upon multiple interactions between membrane-embedded caveolins, lipids and cytosolic cavin proteins. Of the four cavin family members, only cavin1 is strictly required for caveola formation. Here, we demonstrate that an eleven residue (undecad) repeat sequence (UC1) exclusive to cavin1 is essential for caveolar localization and promotes membrane remodelling through binding to phosphatidylserine. In the notochord of mechanically stimulated zebrafish embryos, the UC1 domain is required for caveolar stability and resistance to membrane stress. The number of undecad repeats in the cavin1 UC1 domain varies throughout evolution, and we find that an increased number also correlates with increased caveolar stability. Lastly, we show that the cavin1 UC1 domain induces dramatic remodelling of the plasma membrane when grafted into cavin2 suggesting an important role in membrane sculpting. Overall, our work defines a novel conserved cavin1 modular domain that controls caveolar assembly and stability. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Australia | 3 | 38% |
Germany | 1 | 13% |
Unknown | 4 | 50% |
Demographic breakdown
Type | Count | As % |
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Scientists | 4 | 50% |
Members of the public | 4 | 50% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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Unknown | 18 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 5 | 28% |
Student > Bachelor | 2 | 11% |
Student > Master | 2 | 11% |
Professor | 2 | 11% |
Student > Doctoral Student | 1 | 6% |
Other | 3 | 17% |
Unknown | 3 | 17% |
Readers by discipline | Count | As % |
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Biochemistry, Genetics and Molecular Biology | 8 | 44% |
Agricultural and Biological Sciences | 4 | 22% |
Immunology and Microbiology | 1 | 6% |
Neuroscience | 1 | 6% |
Unknown | 4 | 22% |