The following animation represents transposase binding to a donor DNA molecule (blue), excising the transposon (black), and integrating the transposon into a target molceule (red).

This animation is a link from Nancy Craig's website. For more information on Tn7 transposition, including an online lecture about Tn7, see this website:

• Craig N., R. Craigie, M. Gellert, and A. Lambowitz. 2002. Mobile DNA II. American Society for Microbiology Press, Washington, DC.
• Peters J., and N. Craig. 2001. Tn7: smarter than we thought. Nat Rev Mol Cell Biol. 2: 806-814.