CGSC Strain#: 4882
Strain Designation: DF51      Source of Strain: D. Fraenkel
Other Designations: MM6
Sex: Hfr    Point of Origin#: 1   Map Position: 96.80   Direction of Marker Transfer: Clockwise
Chromosomal Markers: lacI22, dctB3, λ^-, e14-, ptsI2, relA1, spoT1, thiE1
Strain Comments:

• e14--- : Loss of the e14 element makes the strain McrA^-.
• ptsI2-- results in strain phenotype of no growth on mannitol or glucose, good growth on glycerol plus cAMP.
• 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 lac_i3^-
• thiE1 was formerly called thi-1

References:

• Asensio 1963. Arch.Biochem. 103:299-0
• 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.
• Lo, T.C.Y., M.K. Rayman, B.D. Sanwal 1972. Transport of succinate in Escherichia coli.I. Biochemical and Genetic studies of transport in whole cells. J.Biol.Chem. 247:6323-307