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

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Strain W3140

• CGSC#: 805
• Strain Designation

  Designation	Source	Preference
  W3140	Lederberg J.	1

  
  
• Sex(Hfr,F+,F-,or F'): Hfr
• Hfr Point of Origin#: 2A
• PO Map Position: 12.20
• Direction of Marker Transfer: Counterclockwise
• 5 Mutations:

  Mutation	Location	Certainty	Display
  lacZ39(del)	7.81	1	ΔlacZ39
  relA1	62.71	0	relA1
  rpsL45(strR)	74.84	1	rpsL45(strR)
  spoT1	82.34	0	spoT1
  metB1	88.94	1	metB1

  
  
• Comments:
  • (Ullmann et al. refer to lacZ39 in Fig. 1 of their paper as "4680".)
  • lacZ39 is a deletion of ca. 1/3 of the lacZ gene.
• References:
  • Cook, A., J. Lederberg 1962. Recombination studies of lactose nonfermenting mutants of Escherichia coli K12. Genetics 47:1335-1353
  
  

  Printable Strain Report