Antibodies to synthetic peptides based on band 3 motifs react specifically withPlasmodium falciparum(humanmalaria)-infected erythrocytes and block cytoadherence

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Abstract
SUMMARY: Rabbit polyclonal and mouse monoclonal antibodies (Mabs) prepared against synthetic peptides patterned on exofacialloops 3 (amino acids 546–555) and 7 (821–834) of the human anion transport protein band 3 inhibited the cytoadherence ofPlasmodium falciparum-infected erythrocytes to C32 amelanotic melanoma cells. Mabs directed against exofacial loop4 (amino acids 628–642) did not inhibit adherence to a significant degree. The murine Mabs recognized onlyP. falciparum-infected erythrocytes suggesting that the epitopes of loops 3, 4 and 7 are normally cryptic in uninfected erythrocytes.