CGSC Strain#: 353
Strain Designation: AB353      Source of Strain: A.L. Taylor
Other Designations: AT-53
Sex: Hfr    Point of Origin#: 12   Map Position: 68.80   Direction of Marker Transfer: Clockwise
Chromosomal Markers: thr-1, leuB6(Am), panD1, lacZ4, glnX44(AS), λ^-, rpsL8, thiE1
Strain Comments:

• leuB6(Am)-- Suppressed by serU suppressor (supH)
• 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
• thiE1 was formerly called thi-1
• Am = amber(UAG) mutation
• AS = amber(UAG) suppressor

References:

• Cronan, JE 1980. Beta-alanine synthesis in Escherichia coli. J. Bacteriol. 141(3):1291-7.