FhCaBP3: A Fasciola hepatica calcium binding protein with EF-hand and dynein light chain domains

► FhCaBP3 contains two EF-hand motifs and a dynein light chain-like domain. ► Modelling predicts that calcium ion binding disrupts β-sheets in the DLC domain. ► FhCaBP3 binds Ca2+ and Mn2+ ions, but not Mg2+, Ba2+, Sr2+, Zn2+, Cd2+, Cu2+, Ni2+. ► FhCaBP dimerises, but calcium ions reduce the amount of dimerisation. ► FhCaBP3 binds a range of calmodulin antagonists.