CGSC Strain#: 7057
Strain Designation: JT1     
Source of Strain: G.D. Markham
Sex: F-
Chromosomal Markers: thr-1,
araC14,
leuB6(Am)
,
Δ(gpt-proA)62,
lacY1,
sbcC201,
tsx-33,
glnX44(AS)
,
galK2(Oc)
,
λ-,
Rac-0,
sbcB15,
hisG4(Oc)
,
rfbC1,
mgl-51,
cysN96::kan,
recB21,
recC22,
rpsL31(strR)
,
kdgK51,
xylA5,
mtl-1,
argE3(Oc)
,
thiE1Strain Comments: - leuB6(Am)-- Suppressed by serU suppressor (supH)
- glnX44(AS)-- Mutation is a C to T transition at nucleotide 34 (3rd position of the anticodon)
- galK2(Oc)-- is a GAA(glu) to TAA(ochre) mutation, residue 134. Oller et al.1993. Apparently non-suppressible, since all revertants found were at the ochre site.
- Δ(gpt-proA)62 was formerly called proA2
- galK2(Oc) was formerly called gal2
- glnX44(AS) was formerly called su+II
- glnX44(AS) was formerly called supE44
- glnX44(AS) was formerly called glnV44
- rfbC1 was formerly called rfbD1
- thiE1 was formerly called thi-1
- = kanamycin resistant
- Am = amber(UAG) mutation
- AS = amber(UAG) suppressor
- Oc = ochre(UAA) mutation
- strR = streptomycin resist.
References: - Leyh, T.F., J.C. Taylor, G.D. Markham 1988. The sulfate activation locus of Escherichia coli K12: cloning, genetic, and enzymatic characterization. J.Biol.Chem. 263:2409-2416