TABLE 2.

Frequency of the transposition of IS1999 and its derivatives

TransposonTransposition frequency (±SDa)
IS1999.Kan3.7 × 10−6 (1.7 × 10−6)
IS1999as.Kan1.7 × 10−6 (2.1 × 10−7)
IS1999stop.Kan<1.0 × 10−7
IS1999.2.Kan2.6 × 10−7 (8.7 × 10−8)
TnLR4.0 × 10−6 (9.2 × 10−7)
TnLL3.6 × 10−6 (1.0 × 10−6)
TnRR3.7 × 10−7 (2.6 × 10−7)
Tn1999<1.0 × 10−7
  • a Standard deviations calculated from three independent cultures are indicated in parentheses.