Figure 6.

Integration by homologous recombination generates chimeric LTRs in HERV-K6p21. (A) The LTRs of the newly integrating HERV-K element are depicted with shaded boxes and those of the ancient HERV-K element that it recombined into are depicted with cross-hatched boxes. The resultant recombinant element is shown. The chimeric LTRs generated by the recombination event are aligned for comparison. (B) The chimeric 5′ and 3′ LTR sequences in the human, chimpanzee, bonobo, and gorilla were aligned and the position of the base pair differences is plotted along the length of the LTR. The same analysis was done for HERV-K20q11 as a comparison and is shown below the 6p21 plot.