CGSC Strain#: 4835
Strain Designation: TK121      Source of Strain: W. Epstein
Sex: F- Chromosomal Markers: kefC121, lacZ82(Am), Δ(kdpC-kdpA)18, λ^-, rha-4, thiE1, gal-33
Strain Comments:

• lacZ82(Am)-- comes from strain Hfr 3000 X82. It is an amber mutation.
• Δ(kdpC-kdpA)18-- deletion has been called kdpABC5.
• thiE1 was formerly called thi-1
• Am = amber(UAG) mutation

References:

• Epstein, W., B.S. Kim 1971. Potassium transport loci in Escherichia coli K-12. J.Bacteriol. 108:639-644