CGSC Strain#: 5005
Strain Designation: XA3      Source of Strain: Brenner and Beckwith
Sex: F- Chromosomal Markers: lacZ13(Oc), lacI22, glnU69(OS), λ^-, rpsL135(strR), malT1(λ^R), xyl-7, mtlA2, thiE1
Strain Comments:

• supB69 is Brenner's su_B⁺.
• lacZ13(Oc)-- is lacZ₂ of Jacob, originating in Paris strain 3.320. It is an ochre, polar mutation.
• glnU69(OS) was formerly called su_B⁺$
• glnU69(OS) was formerly called supB69
• lacI22 was formerly called lac_i3^-
• lacI22 was formerly called lacI3
• thiE1 was formerly called thi-1
• xyl-7 was formerly called xylA7
• LamR = Lambda-resistant
• Oc = ochre(UAA) mutation
• OS = ochre(UAA) suppressor
• strR = streptomycin resist.

References:

• Brenner, S., J.R. Beckwith 1965. Ochre mutants, a new class of suppressible nonsense mutants. J.Mol.Biol. 13:629-637