Abstract
The virulence of Plasmodium falciparum is linked to the ability of infected erythrocytes (IEs) to bind a range of human receptors. This binding is mediated by a family of highly polymorphic proteins known as P. falciparum erythrocyte membrane protein 1 (PfEMP1). PfEMP1 proteins are expressed on the surface of IEs and are composed of extracellular domains (NTS, CIDR, DBL), a transmembrane region and an acidic C-terminal segment. Subdomains of the extracellular N-terminal part of PfEMP1 molecules have been shown to bind specific receptors.In this chapter, we describe how to purify PfEMP1 proteins by a receptor affinity-based method. This includes how to prepare affinity columns and how to subsequently test the functionality of the purified PfEMP1 protein in an ELISA-based assay.
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