CGSC Strain#: 5425
Strain Designation: LEP1      Source of Strain: E. Yagil
Sex: F- Chromosomal Markers: secA206(aziR), fhuA23, lacZ73, lacI22, proC34, phoR23, tsx-67, purE42, glnX44(AS), λ^-, trpE38, P1+, rpsL109(strR), xylA5, mtl-1, thiE1
Strain Comments:

• purE42-- :Strains with this marker are derivatives of Χ148 and may carry malA38LAMR and a suppressor of the Mal^- phenotype, sup-78,near his.
• glnX44(AS)-- Mutation is a C to T transition at nucleotide 34 (3rd position of the anticodon)
• glnX44(AS) was formerly called su⁺_II
• glnX44(AS) was formerly called supE44
• glnX44(AS) was formerly called glnV44
• lacI22 was formerly called lacI3
• lacI22 was formerly called lac_i3^-
• thiE1 was formerly called thi-1
• AS = amber(UAG) suppressor
• aziR = azide resistance
• strR = streptomycin resist.

References:

• Bracha, M, E Yagil 1973. A ne type of alkaline phosphatase-negative mutants in Escherichia coli K12. Mol. Gen. Genet. 122(1):53-60.