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Sporozoite and Liver Stage Antigen (SALSA) sequence synthetic peptides were used in HepG2 cell binding assays to identify regions involved in parasite invasion. SALSA 20608 ( 21 IWASEKKDEKEASEQGEESHY 40 ) and 20611 ( 64 KKDDGTDKVQEKVLEKSPKY 83 ) peptides were determined as having high binding activity in HepG2 cell assays, some of them were located...
Plasmodium falciparum rhoptry-associated proteins 1 (RAP1) and 2 (RAP2) are antigens presenting themselves as candidates for a subunit malaria vaccine. RAP2 protein, non-overlapping, consecutive peptides were synthesised and tested in red blood cell (RBC) binding assays to identify their receptor-ligand interaction in recognising RAP2 regions involved in the in vitro merozoite invasion process. Four...
This work determined Plasmodium falciparum merozoite surface protein-8 (MSP-8) regions specifically binding to membrane surface receptors on human erythrocytes. Five high activity binding peptides (HABPs), whose binding to erythrocytes became saturable and sensitive on being treated with neuraminidase and chymotrypsin were identified from the MSP-8 protein. Those amino acids directly involved in interaction...
It has been demonstrated that Plasmodium falciparum sporozoite threonine-asparagine-rich protein (PfSTARP) is located on the sporozoite surface. This protein's non-overlapping consecutive peptides were synthesised and tested in Hep G2 cell binding assays. Twelve high activity binding peptides (HABPs) were identified in the resulting 31 peptides. Three were found in 5' non-repeat region (amino acids...
Synthetic peptides from the liver stage antigen-1 (LSA-1) antigen sequence were used in HepG2 cell and erythrocyte binding assays to identify regions that could be involved in parasite invasion. LSA-1 protein peptides 20630 ( 21 INGKIIKNSEKDEIIKSNLRY 40 ), 20637 ( 157 KEKLQGQQSDSEQERRAY 173 ), 20638 ( 174 KEKLQEQQSDLEQERLAY...
Histidine-rich proteins have been associated with Plasmodium falciparum infected red blood cells (RBC) cytoadherence, and RBC rosetting; these phenomena may cause clogging of the post-capillary venules, this being one of the main causes of severe cerebral malaria. They may also participate in parasite mature stages' evasion of the immune system and their subsequent destruction in the spleen. Non-overlapping...
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