FIG. 3.

Maps of the expression vectors pMK-Express and pMC-Express. Genes aphA3 (kanamycin resistance), cat (chloramphenicol resistance), gfpmut3 (GFP), and mob (mobilization protein) are indicated by solid arrows. The A. pleuropneumoniae sodC promoter (sodCP) is indicated by the arrowhead upstream of gfpmut3. Relevant restriction sites are labeled as follows: A, ApaI; Ba, BamHI; Bs, BstXI; EI, EcoRI; EV, EcoRV; K, KpnI; Nh, NheI; No, NotI; P, PstI; S, SacI; Xb, XbaI; Xh, XhoI. All labeled restriction sites are unique except for XbaI, which cuts twice in both pMK-Express and pMC-Express.