7. d.252.1 CheC-like CheC-like duplication: tandem repeat of two intertwined alpha-beta-(X)-beta(2) motifs 1squ d1squb_ B:2-22,41-51,53-60,82-108,110-122 1xko d1xkob_ B:2-22,41-51,52-61,82-108,110-122 1xko d1xkoa_ A:2-22,41-51,53-61,82-105,110-122 1squ d1squa_ A:2-22,41-51,53-61,82-108,110-122