(A) the predicted model of T. congolense calflagin (middle vertical column) exhibits four EF-hands motifs. The EF-hands (EF1, EF2, EF3 and EF4) are colored green, salmon, cyan, yellow, accordingly. Left panel: structural alignment of T. congolense (grey) over T. cruzi FCaBP (green). Right panel: T. congolense calflagin structure aligned over T. brucei Tb24 (magenta). (B) Surface representation of the three calflagin models overlapping panel A, showing exposed hydrophobic (gray), basic (blue) and acidic (red) respectively. (C) 180° rotation of B in the y-axis. Black arrows pointing towards putative epitopes and numbered according to their respective α-helix location.