Figure 9

ClustalW alignment of the IPE1-IPE3 (IPE4-IPE6 are shown in Additional file 3) CENP-A associated repeats recovered by immunoprecipitation from chromosome 21. The minority of DVNs that are shared between most of the six homologues are shown in the upper line, with their positions along the 1866 bp long HOR indicated. No DVNs at all were exhibited by 12 (IPE1), 15 (IPE2), or 29 (IPE3) repeats; they might, however, differ by a few sporadic mutations (less than 0.2% on average)