CGSC Strain#: 4863
Strain Designation: ES245      Source of Strain: E. Siegel
Sex: Hfr    Point of Origin#:    Map Position: Chromosomal Markers: λ^-, relA1, spoT1, ilvD188(Oc), uvrD156, thiE1
Strain Comments:

• spoT1-- In addition to the 6bp insertion, there is a C to T transition resulting in an H257Y substitution.
• uvrD156-- was formerly called uvrE156 and mutU4.
• thiE1 was formerly called thi-1
• Oc = ochre(UAA) mutation

References:

• Siegel, EC 1973. Ultraviolet-sensitive mutator strain of Escherichia coli K-12. J. Bacteriol. 113(1):145-60.