CGSC Strain#: 2421
Strain Designation: AB2421      Source of Strain: P. Howard-Flanders
Sex: F- Chromosomal Markers: thr-1, araC14, leuB6(Am), Δ(gpt-proA)62, lacY1, tsx-33, λ^-, uvrB45, hisG4(Oc), rpsL31(strR), xylA5, mtlA2, argE3(Oc), thiE1, uvrA6
Strain Comments:

• leuB6(Am)-- Suppressed by serU suppressor (supH)
• Δ(gpt-proA)62 was formerly called proA2
• thiE1 was formerly called thi-1
• Am = amber(UAG) mutation
• Oc = ochre(UAA) mutation
• strR = streptomycin resist.

References:

• Howard-Flanders, P., R.P. Boyce, L. Theriot 1966. Three loci in Escherichia coli K-12 that control the excision of pyrimidine dimers and certain other mutagen products from DNA. Genetics 53:1119-1136