CGSC Strain#: 2542
Strain Designation: AB2542      Source of Strain: G. Eggertsson
Sex: Hfr    Point of Origin#: 12   Map Position: 68.80   Direction of Marker Transfer: Clockwise
Chromosomal Markers: glnX44(AS), purF1, xyl-7, ilvD188(Oc), ΔargH1
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
• xyl-7 was formerly called xylA7
• AS = amber(UAG) suppressor
• Oc = ochre(UAA) mutation

References:

• Eggertsson, G., E.A. Adelberg 1965. Map positions and specificities of suppressor mutations in Escherichia coli K-12. Genetics 52:319-340