CGSC Strain#: 8208
Strain Designation: BW19094/pLD53      Source of Strain: B.L. Wanner
Sex: F- Episome/Plasmid: pLD53
   Plasmid Markers/Mutations: oriR6K_γ, MCS, tetA, oriT_RP4, bla-1(ApR,dPstI), tetR
Chromosomal Markers: Δ(codB-lacI)3, ΔphoA532, ΔuidA3::pir⁺, Δ(phnP-phnD)3330( phnC?)
Strain Comments:

• Δ(codB-lacI)3-- is a deletion of the entire lac operon, from the strain Hfr 3000 X74 of Jacob. Refs. on extent of deletion: Sung et al.1987,J.Bact.169:2639; Gerdes et al.2001
• Δ(codB-lacI)3-- Shown by Ferrandez et al. 1997 to extend to mhpD
• Δ(codB-lacI)3-- Shown by Durfee et al. to extend from codon 292 of yahG through mhpE
• ΔuidA3::pir⁺-- Allows the replication of plasmids with an R6Kγ origin of replication
• Δ(codB-lacI)3 was formerly called Δlac74
• Δ(codB-lacI)3 was formerly called Δ(lac)3
• Δ(codB-lacI)3 was formerly called Δ(yahG-mhpE)
• Δ(codB-lacI)3 was formerly called X74
• Δ(codB-lacI)3 was formerly called DE(lac)6
• ΔuidA3::pir⁺ was formerly called uidA(Δ MluI)::pir⁺
• phnC? = may also delete phnC
• = tetracycline resistant
• ApR = ampicillin resistant
• dPstI = PstI site deleted

References:

• Metcalf, W.W., W. Jiang, B.L. Wanner 1994. Use of the rep technique for allele replacement to construct new Escherichia coli hosts for maintenance of R6Kgamma origin plasmids at different copy numbers. Gene 138:1-7