CGSC Strain#: 6545
Strain Designation: CU925      Source of Strain: H.E. Umbarger
Sex: F- Chromosomal Markers: araBAD-0, Δ(gpt-lac)5, λ^-, Δ(ilvG-ilvE)2130, thi-0
Strain Comments:

• pro-lac is the deletion of gpt-lac from strain Hfr3000 X111.
• It has not been possible to identify the parent strain CSH26 (J. Miller 1972 Experiments in Molecular Genetics, Cold Spring Harbor Laboratory). We have assumed that the deletion described as
• Δ(gpt-lac)5-- is the deletion Δ( pro-lac)_X111 of Jacob and originated in the strain Hfr 3000 X111.

References:

• Gayda, R.C., T.D. Leathers, J.D. Noti, F.J. Smith, C.S. Subrahmanyam, H.E. Umbarger 1980. Location of the multivalent control site for the ilvEDA operon of Escherichia coli. J.Bacteriol. 142:556-567