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

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Strain HB94

• CGSC#: 5461
• Strain Designation

  Designation	Source	Preference
  HB94	Boyer H.	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
  gal-55	17.00	1	gal-55
  LAM-	17.40	0	λ-
  relA1	62.71	1	relA1
  spoT1	82.34	1	spoT1
  thiE1	90.34	1	thiE1
  hsdR4	98.74	1	hsdR4

  
  
• Comments:
  • N.B. We have two reports that this strain is immune to phage λ; that it does not adsorb λ.
  • This strain is r^-, m_K⁺. The mutation hsdR4 is called ramA7 in the reference below.
• References:
  • Boyer, HW, D Roulland-Dussoix 1969. A complementation analysis of the restriction and modification of DNA in Escherichia coli. J. Mol. Biol. 41(3):459-72.
  
  

  Printable Strain Report