text: (a) The Tn6087 target site within S. oralis F.MI.5. (b) The left end and (c) right end of Tn6087 are shown in bold. (d) The joint of the circular intermediate of Tn6087 is shown. The transposon's coupling sequences are shown in bold italics. As can be seen in (d), the coupling sequence at the joint of the circular form is a heteroduplex.
  