CGSC Strain#: 5401
Strain Designation: CA167      Source of Strain: S. Brenner
Sex: Hfr    Point of Origin#: 1   Map Position: 96.80   Direction of Marker Transfer: Clockwise
Chromosomal Markers: lacZ13(Oc), lacI22, tyrT70(OS), relA1, spoT1, thiE1
Strain Comments:

• lacZ13 and lacI22 are Jacob alleles lac^-₂ and lac₃, respectively.
• lacZ13(Oc)-- is lacZ₂ of Jacob, originating in Paris strain 3.320. It is an ochre, polar mutation.
• spoT1-- In addition to the 6bp insertion, there is a C to T transition resulting in an H257Y substitution.
• lacI22 was formerly called lac_i3^-
• lacI22 was formerly called lacI3
• thiE1 was formerly called thi-1
• tyrT70(OS) was formerly called supC70
• tyrT70(OS) was formerly called su_C⁺
• Oc = ochre(UAA) mutation
• OS = ochre(UAA) suppressor

References:

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