CGSC Strain#: 6961
Strain Designation: TL225     
Source of Strain: T.J. Larson
Sex: F-
Chromosomal Markers: [araD139]B/r,
Δ(argF-lac)169,
λ-,
zce-727::Tn10,
flhD5301,
Δ(fruK-yeiR)725(fruA25),
relA1,
rpsL150(strR),
malT101(Const)
,
ΔmalE444,
deoC1Strain Comments: - The thr-ara region was transduced in from E. coliB.
- [araD139]B/r-- The thr-leu region was transduced from an E. coli B/r strain (SB3118) in early steps of strain derivation; ara or in some strains ara-leu or thr-leu are from B.
- Δ(argF-lac)169-- extends from mmuP through orfs preceding argF, through lac to mhpD, literally Δ(mmuP-mhpD)169. (Peters et al. 2003 JB 185:2017)
- Δ(argF-lac)169-- from strain Hfr3000 U169 was initially called ΔlacU169 and described as a lacZY mutation until found to include argF and lacI.
- zce-727::Tn10-- cotransduces 11% with pyrC and 61% with ptsG. The thr-ara region was transduced in from E. coliB.
- flhD5301-- flagellar defect shown in Komeda and Iino
- Δ(fruK-yeiR)725(fruA25)-- : this fruA25 mutation deletes 29 codons of fruK, fruB and fruBKAp promoter to orf yeiR Peters et al. J.Bact.185:2017.
- rpsL150(strR)-- T to C transition mutation resulting in a K43R amino acid substitution.
- malT101(Const)-- In the paper cited malT101 is designated malTC-1.
- Δ(fruK-yeiR)725(fruA25) was formerly called fruA25
- = tetracycline resistant
- Const = constitutive
- fruA25 = former designation
- strR = streptomycin resist.
References: - Larson, T.J., D.N. Ludtke, R.M. Bell, S. Jackowski 1984. sn-Glycerol-3-phosphate auxotrophy of plsB strains of Escherichia coli: evidence that a second mutation, plsX, is required. J.Bacteriol. 160:711-717