Figure 2.
Structure of pMODloxZeoΔAmp3. (A) The structure of pMODloxZeoΔAmp3, which serves a transposable element having loxP sequences and Zeocin-resistance marker. This plasmid does not confer ampicillin resistance because its bla gene is truncated, but does confer Zeocin resistance through EM7 promoter-Zeo cassette (B). The nucleotide sequence of the transposable segment is shown. The loxP sequences are indicated by solid boxes. The positions of sequencing primers, lox-Cla and lox-Nsi were indicated by arrows.