TABLE 5.

TnpZ-mediated plasmid mobilization by RP4 in E. coli

Plasmida	Transposon	Mobilization frequencyb
pJIR62	Nonec	<5.0 × 10−8
pJIR45	Tn4451	1.0 × 10−2
pJIR1377	Tn4453a	1.8 × 10−5
pJIR1378	Tn4453b	1.2 × 10−2

^aAll donor strains were derivatives of E. coli S17-1 (26) and contained the indicated plasmid. 

^bEach value is an average of two independent experiments and refers to the number of chloramphenicol-resistant transconjugants per donor cell. 

^cCarries the catP gene only.