CGSC Strain#: 4407
Strain Designation: W1655, LAMR     
Source of Strain: Clowes & Hayes
Other Designations: EMG22
Sex: F+
Chromosomal Markers: λ-,
relA1,
spoT1,
metB1,
λRStrain Comments: - spoT1-- In addition to the 6bp insertion, there is a C to T transition resulting in an H257Y substitution.
- λR-- Lambda resistant, locus unknown.
References: - Broda, P. 1967. The formation of Hfr strains in Escherichia coli K12. Genet.Res. 9:35-47
- Clowes, R., W. Hayes 1968. Experiments in microbial genetics