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Alignment of Hsp70 and MreB sequences from different groups of species showing the absence of the diderm insert in the MreB sequences. The absence of the insert in all MreB proteins, as well as Hsp70 homologs from archaebacteria and gram-positive bacteria (boxed region), provides evidence that the homologs lacking the insert are ancestral. (104, 107). The numbers at the beginning and at the end indicate the position of the sequence in individual proteins.
