CGSC Strain#: 4098
Strain Designation: AB4098      Source of Strain: D. Vapnek
Sex: F- Chromosomal Markers: lac-19, thyA39, thyR21, gal-32
Strain Comments:

• thyA39-- Strains with this marker must have their medium supplemented with thymine (25ug/ml). This is true even for rich medium such as LB. Otherwise thymine starvation can lead to thymineless death.

References:

• Vapnek, D, MB Lipman, WD Rupp 1971. Physical properties and mechanism of transfer of R factors in Escherichia coli. J. Bacteriol. 108(1):508-14.