The physical map of pBBR1-FLP2 (GenBank accession number FJ797950) shows the locations and orientations of the genetic determinants involved in replication (rep), mobilization (mob), ampicillin/ carbenicillin resistance (bla, β-lactamase-coding gene), FLP-FRT recombination (FLP, Flippase-coding gene) and the counter-selectable marker (sacB, Bacillus subtilis levansucrase-encoding gene). Some unique restriction enzyme sites are shown. cI857, gene encoding a temperature sensitive λ repressor.