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. 2006 Aug 31;34(16):4537–4545. doi: 10.1093/nar/gkl634

Figure 3.

Figure 3

Model for flip-flop recombination on the two copies of the psbA 3′-UTR present in the transplastomes. (A) Inversion of a large, 70 kb segment of the large single copy region (LSC) by recombination between the two homologous sequences. IRA and IRB, inverted repeat regions; SSC, small single copy region. (B) Maps of the two different genome conformations in the psaJ/rpl33 region of the plastid genome. Restriction fragments hybridizing to the probe are indicated below each map (cp. Figure 2). (C) Maps of the two different genome conformations in the psbA/trnK/matK region of the plastid genome. PCR primers and expected sizes of amplification products in PCR assays diagnostic for the different genome conformations are also indicated.