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The erythrocytic growth stage of Plasmodium falciparum involves hemoglobin proteolysis as the primary nutrient source with the concomitant release of free heme. The liberated heme is processed by the parasite into hemozoin, a polymeric porphyrin dimer. Histidine-rich protein binds heme and mediates the formation of hemozoin, which is inhibited by the antimalarial drug chloroquine. Interference with...