CGSC Strain#: 6118
Strain Designation: MI237     
Source of Strain: M. Iaccarino
Sex: F-
Chromosomal Markers: fhuA23,
brnR3,
brnQ2,
tsx-67,
purE42,
glnX44(AS)
,
λ-,
trpE38,
lysA23,
rpsL109(strR)
,
xylA5,
mtl-1,
metE70,
thiE1Strain Comments: - purE42-- :Strains with this marker are derivatives of Χ148 and may carry malA38LAMR and a suppressor of the Mal- phenotype, sup-78,near his.
- glnX44(AS)-- Mutation is a C to T transition at nucleotide 34 (3rd position of the anticodon)
- glnX44(AS) was formerly called su+II
- glnX44(AS) was formerly called supE44
- glnX44(AS) was formerly called glnV44
- thiE1 was formerly called thi-1
- AS = amber(UAG) suppressor
- strR = streptomycin resist.
References: - Guardiola, J., M. Iaccarino 1971. Escherichia coli K-12 mutants altered in the transport of branched-chain amino acids. J.Bacteriol. 108:1034-1044
- Guardiola, J., M. DeFelice, T. Klopotowski, M. Iaccarino 1974. Mutations affecting the different transport systems for isoleucine, leucine, and valine in Escherichia coli K-12. J.Bacteriol. 117:393-405