CGSC Strain#: 5607
Strain Designation: WA251      Source of Strain: W. Arber
Other Designations: B251;Bc251
Sex: F- Chromosomal Markers: lon-, [mal⁺]_K-12(λ^S)
Strain Comments:

• This is wild-type E. coli B cured of a defective prophage (1) and transduced to Mal⁺, LAMS with phage P1 grown on K-12 strain W3110 (2,3).
• LamS = Lambda sensitive

References:

• COHEN, D 1959. A variant of phage P2 originating in Escherichia coli, strain B. Virology 7(1):112-26.
• Arber, W. 1961. Pathol.Microbiol. 24:1012-0
• ARBER, W, D DUSSOIX 1962. Host specificity of DNA produced by Escherichia coli. I. Host controlled modification of bacteriophage lambda. J. Mol. Biol. 5:18-36.