CGSC Strain#: 5743
Strain Designation: K12S      Source of Strain:
Sex: F+ Chromosomal Markers: λ^-, serU84(AS), fhuA27 or fhuA24
Strain Comments:

• This is a replacement for CGSC No. 5711, which is said to carry a phage and may carry supE44, lacY40, and galT22.
• This is K12S, Paris. Note that the designation K12S may have been used in the past to refer to other lambda-sensitive strains.
• serU84(AS) was formerly called supD84
• AS = amber(UAG) suppressor

References:

• Bachmann, BJ 1972. Pedigrees of some mutant strains of Escherichia coli K-12. Bacteriol.Rev. 36(4):525-57.