CGSC Strain#: 4884
Strain Designation: FR-1     
Source of Strain: D. Fraenkel
Other Designations: DF53
Sex: Hfr
Point of Origin#: 1
Map Position: 96.80
Direction of Marker Transfer: Clockwise
Chromosomal Markers: lacI22,
dctB3,
e14-,
glk-1,
relA1,
spoT1,
thiE1Strain Comments: - e14--- : Loss of the e14 element makes the strain McrA-.
- spoT1-- In addition to the 6bp insertion, there is a C to T transition resulting in an H257Y substitution.
- lacI22 was formerly called laci3-
- lacI22 was formerly called lacI3
- thiE1 was formerly called thi-1
References: - FRAENKEL, DG, F FALCOZ-KELLY, BL HORECKER 1964. THE UTILIZATION OF GLUCOSE 6-PHOSPHATE BY GLUCOKINASELESS AND WILD-TYPE STRAINS OF ESCHERICHIA COLI. Proc. Natl. Acad. Sci. U.S.A. 52:1207-13.
- Tanaka, S, DG Fraenkel, EC Lin 1967. The enzymatic lesion of strain MM-6, a pleiotropic carbohydrate-negative mutant of Escherichia coli. Biochem. Biophys. Res. Commun. 27(1):63-7.