CGSC Strain#: 6947
Strain Designation: CA7089     
Source of Strain: J.R. Beckwith
Sex: Hfr
Point of Origin#: 1
Map Position: 96.80
Direction of Marker Transfer: Clockwise
Chromosomal Markers: lacZo-15(Const,o
c)
,
λ-,
e14-,
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.
- thiE1 was formerly called thi-1
- Const = constitutive
- oc = operator-constitutive
References: - Miller, JH, K Ippen, JG Scaife, JR Beckwith 1968. The promoter-operator region of the lac operon of Escherichia coli. J. Mol. Biol. 38(3):413-20.
- Ippen, K, JH Miller, J Scaife, J Beckwith 1968. New controlling element in the Lac operon of E. coli. Nature 217(5131):825-7.