View source for 5ezo


==Crystal Structure of PfCyRPA in complex with an invasion-inhibitory antibody Fab.==
<StructureSection load='5ezo' size='340' side='right'caption='[[5ezo]], [[Resolution|resolution]] 3.63&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5ezo]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens], [https://en.wikipedia.org/wiki/Mus_musculus Mus musculus] and [https://en.wikipedia.org/wiki/Plasmodium_falciparum_3D7 Plasmodium falciparum 3D7]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5EZO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5EZO FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.63&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FUC:ALPHA-L-FUCOSE'>FUC</scene>, <scene name='pdbligand=NAG:N-ACETYL-D-GLUCOSAMINE'>NAG</scene></td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=5ezo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5ezo OCA], [https://pdbe.org/5ezo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5ezo RCSB], [https://www.ebi.ac.uk/pdbsum/5ezo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5ezo ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/CYRPA_PLAF7 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).<ref>PMID:22593616</ref> <ref>PMID:25583518</ref> <ref>PMID:27374406</ref> <ref>PMID:28186186</ref> <ref>PMID:28195038</ref> <ref>PMID:28195530</ref> <ref>PMID:30542156</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Invasion of erythrocytes by Plasmodial merozoites is a composite process involving the interplay of several proteins. Among them, the Plasmodium falciparum Cysteine-Rich Protective Antigen (PfCyRPA) is a crucial component of a ternary complex, including Reticulocyte binding-like Homologous protein 5 (PfRH5) and the RH5-interacting protein (PfRipr), essential for erythrocyte invasion. Here we present the crystal structure of PfCyRPA and of its complex with the antigen-binding fragment of a parasite growth inhibitory antibody. While PfCyRPA adopts a 6-bladed beta-propeller structure with similarity to the classic sialidase fold, it possesses no sialidase activity, indicating that it fulfills a non-enzymatic function. Characterization of the epitope recognized by protective antibodies will facilitate design of peptidomimetics that focus vaccine responses on protective epitopes. Both in vitro and in vivo anti-PfCyRPA and anti-PfRH5 antibodies showed more potent parasite growth inhibitory activity in combination than on their own, supporting a combined delivery of PfCyRPA and PfRH5 in vaccines.

Structure of the malaria vaccine candidate antigen CyRPA and its complex with a parasite invasion inhibitory antibody.,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 Elife. 2017 Feb 14;6. pii: e20383. doi: 10.7554/eLife.20383. PMID:28195038<ref>PMID:28195038</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 5ezo" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Mus musculus]]
[[Category: Plasmodium falciparum 3D7]]
[[Category: Favuzza P]]
[[Category: Pluschke G]]
[[Category: Rudolph MG]]