CGSC Strain#: 5745
Strain Designation: JM221      Source of Strain: M.C. Jones-Mortimer
Sex: F- Chromosomal Markers: pro-50, lac-, tsx-0, galT47, trp-74, his-97, cysD91, argA-, rpsL999(strR), mal-0, xyl-0, ilvA0, mtl-0
Strain Comments:

• We have not been able to trace the derivation of this strain. Allele numbers will be sent to you when this information is available.
• strR = streptomycin resist.

References:

• Jones-Mortimer, MC 1973. Mapping of structural genes for the enzymes of cysteine biosynthesis in Escherichia coli K12 and Salmonella typhimurium LT2. Heredity 31(2):213-21.