CGSC Strain#: 4410
Strain Designation: Hfr Cavalli      Source of Strain: Cavalli-Sforza
Other Designations: EMG25
Sex: Hfr    Point of Origin#: 2A   Map Position: 12.20   Direction of Marker Transfer: Counterclockwise
Chromosomal Markers: relA1, spoT1, metB1, rrnB-2, mcrB1, creC510
Strain Comments:

• spoT1-- In addition to the 6bp insertion, there is a C to T transition resulting in an H257Y substitution.
• rrnB-2-- : loss of spacer loop sequence
• creC510-- The constitutive phenotype is due to an R77P amino acid substitution
• creC510 was formerly called phoM510
• Const = constitutive

References:

• Bachmann, BJ 1972. Pedigrees of some mutant strains of Escherichia coli K-12. Bacteriol.Rev. 36(4):525-57.