E. coli Genetic Resources at Yale
CGSC, The Coli Genetic Stock Center

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Strain XA2

• CGSC#: 5004
• Strain Designation

  Designation	Source	Preference
  XA2	Brenner and Beckwith	1

  
  
• Sex(Hfr,F+,F-,or F'): F-
• 9 Mutations:

  Mutation	Location	Certainty	Display
  lacZ13(Oc)	7.81	1	lacZ13(Oc)
  lacI22	7.88	1	lacI22
  LAM-	17.40	1	λ-
  tyrT70(OS)	27.74	1	tyrT70(OS)
  rpsL135(strR)	74.84	1	rpsL135(strR)
  malT1(LamR)	76.54	1	malT1(λR)
  xyl-7	80.34	1	xyl-7
  mtlA2	81.26	1	mtlA2
  thiE1	90.34	1	thiE1

  
  
• Comments:
  • tyrT70 is Brenner's su_C⁺.
• References:
  • Brenner, S., J.R. Beckwith 1965. Ochre mutants, a new class of suppressible nonsense mutants. J.Mol.Biol. 13:629-637
  
  

  Printable Strain Report