CGSC Strain#: 5448
Strain Designation: JP2144      Source of Strain: A.J. Pittard
Sex: F- Chromosomal Markers: tsx-84, λ^-, trpA9605(Am), tyrR366, his-85(Am), IN(rrnD-rrnE)1, ilv-632
Strain Comments:

• trpA9605(Am)-- is an amber mutation. It is suppressed by supD32.
• his-85(Am)-- is an amber mutation. It is suppressed by supD32.
• IN(rrnD-rrnE)1-- Inverts the region between rrnD (73.74 min) and rrnE (90.66 min)
• his-85(Am) was formerly called his-29
• Am = amber(UAG) mutation

References:

• Camakaris, H, J Pittard 1973. Regulation of tyrosine and phenylalanine biosynthesis in Escherichia coli K-12: properties of the tyrR gene product. J. Bacteriol. 115(3):1135-44.