CGSC Strain#: 12334
Strain Designation: SQ20      Source of Strain: Quan
Sex: F- Chromosomal Markers: λ^-, Δ(rrfG-rrsG)784(::kan), rph-1
Strain Comments:

• 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)
• = kanamycin resistant

References:

• Quan, S, O Skovgaard, CL Squires 2010. Escherichia coli Ribosomal RNA deletion strain. unpublished results :0-0.