CGSC Strain#: 4273
Strain Designation: JC1552      Source of Strain: A.J. Clark
Sex: F- Chromosomal Markers: leuB6(Am), fhuA2, lacY1, tsx-1, glnV44(AS), gal-6, λ^-, trp-31, hisG1(Fs), argG6, rpsL104, malT1(λ^R), xyl-7, mtlA2, metB1
Strain Comments:

• leuB6(Am)-- Suppressed by serU suppressor (supH)
• glnV44(AS) was formerly called supE44
• glnV44(AS) was formerly called su⁺_II
• xyl-7 was formerly called xylA7
• = strep-resistant
• Am = amber(UAG) mutation
• AS = amber(UAG) suppressor
• Fs = Frameshift mutation
• LamR = Lambda-resistant

References:

• Low, K.B. 1973. Rapid mapping of conditional and auxotrophic mutants of Escherichia coli K-12. J.Bacteriol. 113:798-812