CGSC Strain#: 3513
Strain Designation: 188E      Source of Strain: J.A. Wechsler
Sex: Hfr    Point of Origin#:    Map Position: 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:

• Wechsler, J.A. 1969. Antipolarity in the ilv operon of Escherichia coli K-12. J.Bacteriol. 98:1179-1194