A protein palmitoylation cascade regulates microtubule cytoskeleton integrity in Plasmodium
Abstract: Morphogenesis of many protozoans depends on a polarized establishment of cytoskeletal structures. In malaria‐causing parasites, this can be observed when a round zygote develops into an elongated motile ookinete within the mosquito stomach. This morphogenesis is mediated by the pellicle cytoskeletal structures, including the inner membrane complex (IMC) and the underlying subpellicular microtubules (SPMs). How the parasite maintains the IMC‐SPM connection and establishes a dome‐like structure of SPM to support cell elongation is unclear. Here, we show that palmitoylation of N‐terminal cysteines of two IMC proteins (ISP1/ISP3) regulates the IMC localization of ISP1/ISP3 and zygote‐to‐ookinete differentiation. Palmitoylation of ISP1/ISP3 is catalyzed by an IMC‐residing palmitoyl‐S‐acyl‐transferase (PAT) DHHC2. Surprisingly, DHHC2 undergoes self‐palmitoylation at C‐terminal cysteines via its PAT activity, which controls DHHC2 localization in IMC after zygote formation. IMC‐anchored ISP1 and ISP3 interact with microtubule component β‐tubulin, serving as tethers to maintain the proper structure of SPM during zygote elongation. This study identifies the first PAT–substrate pair in malaria parasites and uncovers a protein palmitoylation cascade regulating microtubule cytoskeleton.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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A protein palmitoylation cascade regulates microtubule cytoskeleton integrity in Plasmodium ; volume:39 ; number:13 ; year:2020 ; extent:22
The EMBO journal / European Molecular Biology Organization ; 39, Heft 13 (2020) (gesamt 22)
- Creator
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Wang, Xu
Qian, Pengge
Cui, Huiting
Yao, Luming
Yuan, Jing
- DOI
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10.15252/embj.2019104168
- URN
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urn:nbn:de:101:1-2022062306471155532798
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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18.08.2025, 3:07 AM CEST
Data provider
Deutsche Nationalbibliothek. If you have any questions about the object, please contact the data provider.
Associated
- Wang, Xu
- Qian, Pengge
- Cui, Huiting
- Yao, Luming
- Yuan, Jing
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