(A) Prediction of secondary structure elements and structural disorder in HAX1 in relation to CLPB binding region. The region predicted as interacting with CLPB according to Y2H, the region of the deletion which precludes CLPB binding (81–146 aa) and the minimal binding region are marked. (B) Co-immunoprecipitation with the whole HAX1 and the 81–146 aa deletion, showing minimal interaction for the deletion.