Identification of novel inner membrane complex and apical annuli proteins of the malaria parasite Plasmodium falciparum
| Autor: | Juliane Wunderlich, Marius Schmitt, Jessica Kimmel, Jan Stephan Wichers, Anna Bachmann, Dorothee Heincke, Tim W. Gilberger, Louisa Wilcke, Heidrun von Thien, Samuel Pazicky, Paul-Christian Burda, Sarah Scharf, Michael Filarsky, Christian Löw, Tobias Spielmann, Jan Strauss |
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| Rok vydání: | 2021 |
| Předmět: |
Cell division
Immunology Cell Plasmodium falciparum Protozoan Proteins Proteomics Microbiology 03 medical and health sciences Virology parasitic diseases medicine Compartment (development) Parasite hosting Animals Parasites Malaria Falciparum 030304 developmental biology 0303 health sciences Inner membrane complex biology 030306 microbiology Merozoites biology.organism_classification 3. Good health Cell biology medicine.anatomical_structure Proteome |
| Zdroj: | Cellular microbiologyREFERENCES. 23(9) |
| ISSN: | 1462-5822 |
| Popis: | The inner membrane complex (IMC) is a defining feature of apicomplexan parasites, which confers stability and shape to the cell, functions as a scaffolding compartment during the formation of daughter cells and plays an important role in motility and invasion during different life cycle stages of these single celled organisms. To explore the IMC proteome of the malaria parasite Plasmodium falciparum we applied a proximity-dependent biotin identification (BioID)-based proteomics approach, using the established IMC marker protein Photosensitized INA-Labelled protein 1 (PhIL1) as bait in asexual blood-stage parasites. Subsequent mass spectrometry-based peptide identification revealed enrichment of twelve known IMC proteins and several uncharacterized candidate proteins. We validated nine of these previously uncharacterized proteins by endogenous GFP-tagging. Six of these represent new IMC proteins, while three proteins have a distinct apical localization that most likely represent structures described as apical annuli in Toxoplasma gondii. Additionally, various Kelch13 interacting candidates were identified, suggesting an association of the Kelch13 compartment and the IMC in schizont and merozoite stages. This work extends the number of validated IMC proteins in the malaria parasite and reveals for the first time the existence of apical annuli proteins in P. falciparum. Additionally, it provides evidence for a spatial association between the Kelch13 compartment and the IMC in late blood-stage parasites. This article is protected by copyright. All rights reserved. |
| Databáze: | OpenAIRE |
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