Figure 4. Dynamic patterns of co-evolution between ZNFs and target retrotransposons.
Schematic showing the evolution of L1PA9 and SVA8 retrotransposons parallel to the structural evolution of ZNF93 and ZNF91 along an evolutionary timescale. Red zinc fingers: deletion; blue zinc fingers: change in contact residues; green zinc fingers: duplication. Coloring of ZNF91/ZNF93 horizontal bars: Zinc finger changes (changes in DNA-contacting residues, zinc finger deletions and duplications)/myr during the time interval indicated. Coloring of TE horizontal bars: basepair substitutions/deletions/insertions per site/myr (L1PA), or percentage increase in VNTR size/myr (SVA). myr = million years; owm = old world monkey
