Bracovirus circle reintegration in insect genomic DNA. A. Proposed scenario of CsBV circle reintegration in C. sesamiae wasp genomic DNA. Reintegration of bracovirus circles occurs at viral boundary sites Junction1 (J1) and Junction2 (J2) and involves the deletion of a 40 to 53 nucleotides region of the circle (Δ). DRJ: direct repeat junction involved in virus excision. B. Bracovirus circle integration into lepidopteran genomic DNA has been shown for MdBV and GiBV. In MdBV J1 and J2 sequences are described as Host Integration Motifs and the integrated form has lost 50-51 nucleotides.
Serbielle et al. BMC Evolutionary Biology 2012 12:253 doi:10.1186/1471-2148-12-253