CGSC Strain#: 7093
Strain Designation: Hfr3000 U169     
Source of Strain: F. Jacob
Other Designations: CA7027
Sex: Hfr
Point of Origin#: 1
Map Position: 96.80
Direction of Marker Transfer: Clockwise
Chromosomal Markers: Δ(argF-lac)169,
λ-,
relA1,
spoT1,
thiE1Strain Comments: - Δ(argF-lac)169-- extends from mmuP through orfs preceding argF, through lac to mhpD, literally Δ(mmuP-mhpD)169. (Peters et al. 2003 JB 185:2017)
- Δ(argF-lac)169-- from strain Hfr3000 U169 was initially called ΔlacU169 and described as a lacZY mutation until found to include argF and lacI.
- spoT1-- In addition to the 6bp insertion, there is a C to T transition resulting in an H257Y substitution.
- thiE1 was formerly called thi-1
References: - Casadaban, M.J. 1976. Transposition and fusion of the lac genes to selected promoters in Escherichia coli using bacteriophage lambda and Mu. J.Mol.Biol. 104:541-555