CGSC Strain#: 4929
Strain Designation: SB1803      Source of Strain: T. Blumenthal
Sex: F- Chromosomal Markers: thr-1, araC14, leuB6(Am), Δ(gpt-proA)62, lacY1, glnX44(AS), galK2(Oc), λ^-, Rac-0, hisC3, rfbC1, metG83, rpsL25(strR), kdgK51, xylA5, mtl-1, thiE1
Strain Comments:

• We are told that SB1803 is a poor host for P1, due to a mutation which may be at the lpcB locus. The strain may also be Fla^-.
• 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
• Am = amber(UAG) mutation
• AS = amber(UAG) suppressor
• Oc = ochre(UAA) mutation
• strR = streptomycin resist.

References:

• Blumenthal, T. 1972. P1 transduction: formation of heterogenotes upon cotransduction of bacterial genes with a P2 prophage. Virology 47:76-93