CGSC Strain#: 7691
Strain Designation: W3110hisΔtrpAB     
Source of Strain: C. Yanofsky
Sex: F-
Chromosomal Markers: λ-,
Δ(tonB-trpB)873,
his-0,
IN(rrnD-rrnE)1,
rph-1Strain Comments: - undetermined his allele from strain ``W3110 his-'', perhaps his-85
- IN(rrnD-rrnE)1-- Inverts the region between rrnD (73.74 min) and rrnE (90.66 min)
- rph-1-- is a 1 bp deletion that results in frameshift over last 15 codons and has polar effect on pyrE leading to suboptimal pyrimidine levels on minimal medium.(Jensen 1993 JBact.175:3401)
References: - Yanofsky, C., J. Ito 1966. Nonsense codons and polarity in the tryptophan operon. J.Mol.Biol. 21:313-334