LARGE DIVERSE GENOMES. “The genomes of Polintons are large by transposon standards, 15–20 kb, and encode arrays of diverse proteins. However, several proteins are shared by all Polintons, including protein-primed type B DNA polymerase (pPolB), RVE family integrase, FtsK-like DNA-packaging ATPase, and an adenovirus-type cysteine protease implicated in the maturation of capsid proteins.”
http://onlinelibrary.wiley.com/doi/10.1111/nyas.12728/full