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

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Strain TK121

• CGSC#: 4835
• Strain Designation

  Designation	Source	Preference
  TK121	Epstein W.	1

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

  Mutation	Location	Certainty	Display
  kefC121	1.03	1	kefC121
  lacZ82(Am)	7.81	1	lacZ82(Am)
  DE(kdpC-kdpA)18	15.59	1	Δ(kdpC-kdpA)18
  LAM-	17.40	1	λ-
  rha-4	88.00	1	rha-4
  thiE1	90.34	1	thiE1
  gal-33	1000.00	1	gal-33

  
  
• Comments:
• References:
  • Epstein, W., B.S. Kim 1971. Potassium transport loci in Escherichia coli K-12. J.Bacteriol. 108:639-644
  
  

  Printable Strain Report