Calmodulin mediates the control of a large number of enzymes, ion channels and other proteins by Ca(2+) (By similarity). Among the enzymes to be stimulated by the calmodulin-Ca(2+) complex are a number of protein kinases and phosphatases (By similarity). In trophozoites and schizonts, localizes throughout the cytoplasm (PubMed:3313391). In merozoites, localizes to the apical complex (PubMed:3313391). During the asexual blood stage, expression is low in rings, increases in trophozoites to reach a peak in schizonts (at protein level). Calmodulin is not involved in the mechanism of chloroquine resistance. Belongs to the calmodulin family.