CGSC Strain#: 5271
Strain Designation: TKS4      Source of Strain: T.K. Sundaram
Sex: F- Chromosomal Markers: lac-64, glnV44(AS), pncA1, his-89, nadB7, rpsL182(strR)
Strain Comments:

• This is an EMS-induced lac^- derivative of the strain described as W3899 nic^- nam-11 his^- in reference below.
• pncA1-- : nicotinamide requirement
• glnV44(AS) was formerly called supE44
• glnV44(AS) was formerly called su⁺_II
• pncA1 was formerly called nam-11
• AS = amber(UAG) suppressor
• strR = streptomycin resist.

References:

• Dickinson, E.S., T.K. Sundaram 1970. Chromosomal location of a gene defining nicotinamide deamidase in Escherichia coli. J.Bacteriol. 101:1090-1091