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

About the CGSC

• CGSC Home
• Scope of the Collection

Searching the CGSC Database

• Help With Query Forms
• Strain Query
• Mutation Query
• Gene/Site Query
• Gene Product Query
• Reference Query
• Query Help
• Info on Genetic Nomenclature

How to Request Strains or Information

• Reviving Strains
• Contact Information

Strain Hfr 3000 X74

• CGSC#: 5261
• Strain Designation

  Designation	Source	Preference
  Hfr 3000 X74	Jacob F.	1

  
  
• Sex(Hfr,F+,F-,or F'): Hfr
• Hfr Point of Origin#: 1
• PO Map Position: 96.80
• Direction of Marker Transfer: Clockwise
• 6 Mutations:

  Mutation	Location	Certainty	Display
  DE(codB-lacI)3	7.60	1	Δ(codB-lacI)3
  LAM-	17.40	1	λ-
  e14-	26.00	1	e14-
  relA1	62.71	1	relA1
  spoT1	82.34	1	spoT1
  thiE1	90.34	1	thiE1

  
  
• Comments:
• References:
  • Beckwith, J.R., E.R. Signer 1966. Transposition of the lac region of Escherichia coli. I. Inversion of the lac operon and transduction of lac by phi 80. J.Mol.Biol. 19:254-265
  
  

  Printable Strain Report