CGSC Strain#: 5471
Strain Designation: AJ7      Source of Strain: J.G. Scaife
Sex: F- Chromosomal Markers: lacZ53(Am), tsx-1, gal-6, λ^-, recA1, argG6, rpsL104, malT1(λ^R), xyl-7, mtlA2, metB1, rpoB70, thiE1
Strain Comments:

• lacZ53(Am)-- is the Paris lac^-_{Y14 amber}.
• recA1-- : Missense mutation, altered isoelectric point. Sequenced: G to A for Nuc. 720 (Gly 160 Asp).
• thiE1 was formerly called thi-1
• xyl-7 was formerly called xylA7
• = strep-resistant
• Am = amber(UAG) mutation
• LamR = Lambda-resistant

References:

• Boyd, D.H., W. Zillig 1974. Reference mutations for the beta subunit of RNA polymerase. Mol.Gen.Genet. 130:315-320