TABLE 3.

Conjugation frequencies and pilus formation for mutants with mutations in the ICEHin1056 type IV secretion system

Donor strainConjugation frequency (mean ± SE)aPilus formation
Parent strain3 × 10−2 ± 0.7 × 10−2+
Rd11tfc11 × 10−3 ± 0.1 × 10−3+
Rd11tfc25 × 10−7 ± 0.8 × 10−7
Rd11tfc42 × 10−3 ± 0.8 × 10−3
Rd11tfc61 × 10−7 ± 0.4 × 10−7+
Rd11tfc127 × 10−7 ± 1.2 × 10−7
Rd11tfc143 × 10−7 ± 2.9 × 10−7
Rd11tfc164 × 10−7 ± 1.3 × 10−7
Rd11tfc227 × 10−7 ± 3.3 × 10−7
Rd11tfc236 × 10−7 ± 2.6 × 10−7
Rd11tfc246 × 10−3 ± 2 × 10−3+
  • a The values are the values from three independent experiments.