KL355      Source of Strain:
M.C. CappelloOther Designations:
F- Chromosomal Markers: fhuA2
, purA44Strain Comments:
- The parent of KG20 was PA526 and not PA256 as in reference below.
- 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.
- ampCp-1-- is a promoter mutation; AmpC+ strains carrying this allele produce about 10X the amount of beta lactamase found in wild-type strains. In absence of other amp alleles, use 10-15 ug/ml Amp.
- ampCp-1 was formerly called ampA1
- galK2(Oc) was formerly called gal2
- glnV44(AS) was formerly called supE44
- glnV44(AS) was formerly called su+II
- rfbC1 was formerly called rfbD1
- xyl-7 was formerly called xylA7
- AS = amber(UAG) suppressor
- Fs = Frameshift mutation
- L? = assignment uncertain
- LamR = Lambda-resistant
- Oc = ochre(UAA) mutation
- Eriksson-Grennberg, KG 1968. Resistance of Escherichia coli to penicillins. II. An improved mapping of the ampA gene. Genet. Res. 12(2):147-56.