CGSC Strain#: 444
Strain Designation: AB444      Source of Strain: A.L. Taylor
Sex: F- Chromosomal Markers: lacY1 or lacZ4, glnX44(AS), λ^-, rfbC1, purF1, aroC4, rpsL8 or rplL9(L?) or rpsL14, malT1(λ^R), xyl-7, mtlA2, ΔargH1, thiE1, tsx-23 or tsx-25
Strain Comments:

• glnX44(AS)-- Mutation is a C to T transition at nucleotide 34 (3rd position of the anticodon)
• purF1-- is a very stable mutation and may be an intragenic deletion.
• glnX44(AS) was formerly called su⁺_II
• glnX44(AS) was formerly called supE44
• glnX44(AS) was formerly called glnV44
• rfbC1 was formerly called rfbD1
• thiE1 was formerly called thi-1
• xyl-7 was formerly called xylA7
• AS = amber(UAG) suppressor
• LamR = Lambda-resistant
• strR = streptomycin resist.

References:

• Taylor, A.L., M.S. Thoman 1964. The genetic map of Escherichia coli K-12. Genetics 50:659-663