| Structural highlights
Function
CYRPA_PLAF7 Essential for the invasion of host erythrocytes by blood stage merozoites (PubMed:22593616, PubMed:25583518, PubMed:27374406, PubMed:28195038, PubMed:28195530). Required for the assembly of the PfRH5 adhesion complex (or invasion complex) composed of CyRPA, RH5 and RIPR at the interface between the merozoite and the host erythrocyte membranes (PubMed:25583518, PubMed:28186186, PubMed:28195038, PubMed:28195530, PubMed:30542156). This facilitates the binding of RH5 to host receptor BSG/basigin, which leads to the establishment of a tight junction between the merozoite and host erythrocyte membranes and allows Ca(2+) release into the erythrocyte (PubMed:27374406, PubMed:28186186, PubMed:30542156).[1] [2] [3] [4] [5] [6] [7]
Publication Abstract from PubMed
Plasmodium falciparum causes malaria in humans with over 450,000 deaths annually. The asexual blood stage involves invasion of erythrocytes by merozoites, in which they grow and divide to release daughter merozoites, which in turn invade new erythrocytes perpetuating the cycle responsible for malaria. A key step in merozoite invasion is the essential binding of PfRh5/CyRPA/PfRipr complex to basigin, a step linked to formation of a pore between merozoites and erythrocytes. We show CyRPA interacts directly with PfRh5. An invasion inhibitory monoclonal antibody to CyRPA blocks binding of CyRPA to PfRh5 and complex formation thus illuminating the molecular mechanism for inhibition of parasite growth. We determined the crystal structures of CyRPA alone and in complex with antibody Fab fragment. CyRPA has a six-bladed beta-propeller fold, and we identify the region that interacts with PfRh5. This functionally conserved epitope is a potential target for vaccines against P. falciparum.
Structural basis for inhibition of erythrocyte invasion by antibodies to Plasmodium falciparum protein CyRPA.,Chen L, Xu Y, Wong W, Thompson JK, Healer J, Goddard-Borger E, Lawrence MC, Cowman AF Elife. 2017 Feb 14;6. pii: e21347. doi: 10.7554/eLife.21347. PMID:28195530[8]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
References
- ↑ Dreyer AM, Matile H, Papastogiannidis P, Kamber J, Favuzza P, Voss TS, Wittlin S, Pluschke G. Passive immunoprotection of Plasmodium falciparum-infected mice designates the CyRPA as candidate malaria vaccine antigen. J Immunol. 2012 Jun 15;188(12):6225-37. PMID:22593616 doi:10.4049/jimmunol.1103177
- ↑ Reddy KS, Amlabu E, Pandey AK, Mitra P, Chauhan VS, Gaur D. Multiprotein complex between the GPI-anchored CyRPA with PfRH5 and PfRipr is crucial for Plasmodium falciparum erythrocyte invasion. Proc Natl Acad Sci U S A. 2015 Jan 27;112(4):1179-84. PMID:25583518 doi:10.1073/pnas.1415466112
- ↑ Volz JC, Yap A, Sisquella X, Thompson JK, Lim NT, Whitehead LW, Chen L, Lampe M, Tham WH, Wilson D, Nebl T, Marapana D, Triglia T, Wong W, Rogers KL, Cowman AF. Essential Role of the PfRh5/PfRipr/CyRPA Complex during Plasmodium falciparum Invasion of Erythrocytes. Cell Host Microbe. 2016 Jul 13;20(1):60-71. PMID:27374406 doi:10.1016/j.chom.2016.06.004
- ↑ Galaway F, Drought LG, Fala M, Cross N, Kemp AC, Rayner JC, Wright GJ. P113 is a merozoite surface protein that binds the N terminus of Plasmodium falciparum RH5. Nat Commun. 2017 Feb 10;8:14333. PMID:28186186 doi:10.1038/ncomms14333
- ↑ Favuzza P, Guffart E, Tamborrini M, Scherer B, Dreyer AM, Rufer AC, Erny J, Hoernschemeyer J, Thoma R, Schmid G, Gsell B, Lamelas A, Benz J, Joseph C, Matile H, Pluschke G, Rudolph MG. Structure of the malaria vaccine candidate antigen CyRPA and its complex with a parasite invasion inhibitory antibody. Elife. 2017 Feb 14;6. pii: e20383. doi: 10.7554/eLife.20383. PMID:28195038 doi:http://dx.doi.org/10.7554/eLife.20383
- ↑ Chen L, Xu Y, Wong W, Thompson JK, Healer J, Goddard-Borger E, Lawrence MC, Cowman AF. Structural basis for inhibition of erythrocyte invasion by antibodies to Plasmodium falciparum protein CyRPA. Elife. 2017 Feb 14;6. pii: e21347. doi: 10.7554/eLife.21347. PMID:28195530 doi:http://dx.doi.org/10.7554/eLife.21347
- ↑ Wong W, Huang R, Menant S, Hong C, Sandow JJ, Birkinshaw RW, Healer J, Hodder AN, Kanjee U, Tonkin CJ, Heckmann D, Soroka V, Sogaard TMM, Jorgensen T, Duraisingh MT, Czabotar PE, de Jongh WA, Tham WH, Webb AI, Yu Z, Cowman AF. Structure of Plasmodium falciparum Rh5-CyRPA-Ripr invasion complex. Nature. 2018 Dec 12. pii: 10.1038/s41586-018-0779-6. doi:, 10.1038/s41586-018-0779-6. PMID:30542156 doi:http://dx.doi.org/10.1038/s41586-018-0779-6
- ↑ Chen L, Xu Y, Wong W, Thompson JK, Healer J, Goddard-Borger E, Lawrence MC, Cowman AF. Structural basis for inhibition of erythrocyte invasion by antibodies to Plasmodium falciparum protein CyRPA. Elife. 2017 Feb 14;6. pii: e21347. doi: 10.7554/eLife.21347. PMID:28195530 doi:http://dx.doi.org/10.7554/eLife.21347
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