CGSC Strain#: 4453
Strain Designation: W3213      Source of Strain: J. Lederberg
Other Designations: Hfr₁₃
Sex: Hfr    Point of Origin#: 57   Map Position: 8.42   Direction of Marker Transfer: Clockwise
Chromosomal Markers: relA1, spoT1, metB1
Strain Comments:

• spoT1-- In addition to the 6bp insertion, there is a C to T transition resulting in an H257Y substitution.

References:

• Broda, P., J.R. Beckwith, J. G. Scaife 1964. The characterization of a new type of F-prime factor in Escherichia coli K12. Genet.Res. 5:489-494