CGSC Strain#: 5417
Strain Designation: GUC41      Source of Strain: S.K. Guterman
Sex: F- Chromosomal Markers: thr-1, leuB6(Am), fhuA21, lacY1, glnX44(AS), λ^-, rfbC1, exbB41, thiE1, met-96
Strain Comments:

• The met requirement of this strain may be due to a deletion extending from exbB into metC.
• 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
• rfbC1 was formerly called rfbD1
• thiE1 was formerly called thi-1
• Am = amber(UAG) mutation
• AS = amber(UAG) suppressor

References:

• Guterman, S.K., L. Dann 1973. Excretion of enterochelin by exbA and exbB mutants of Escherichia coli. J.Bacteriol. 114:1225-1230