JM15      Source of Strain:
F- Chromosomal Markers: cysE50
, tfr-8Strain Comments:
- This strain is sensitive to cysteine; use cystine, instead. The nature of the mutation conferring resistance to phage T4 (tfr-8) is not known.
- Jones-Mortimer, MC 1968. Positive control of sulphate reduction in Escherichia coli. Isolation, characterization and mapping oc cysteineless mutants of E. coli K12. Biochem. J. 110(3):589-95.