CGSC Strain#: 6081
Strain Designation: KLC421      Source of Strain: J.W. Chase
Sex: Hfr    Point of Origin#: 1   Map Position: 96.80   Direction of Marker Transfer: Clockwise
Chromosomal Markers: Δ(galK-bioD)76, λ^-, Δ(upp-guaB)92, relA1, spoT1, thiE1
Strain Comments:

• spoT1-- In addition to the 6bp insertion, there is a C to T transition resulting in an H257Y substitution.
• thiE1 was formerly called thi-1

References:

• Vales, L.D., J.W. Chase, J.B. Murphy 1979. Orientation of the guanine operon of Escherichia coli K-12 by utilizing strains containing guaB-xse and guaB-upp deletions. J.Bacteriol. 139:320-322