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

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Strain JM39

• CGSC#: 5043
• Strain Designation

  Designation	Source	Preference
  JM39	Jones-Mortimer M.C.	1

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

  Mutation	Location	Certainty	Display
  cysE51	81.47	1	cysE51
  tfr-8	1000.00	1	tfr-8

  
  
• Comments:
  • This strain is sensitive to cysteine; use cystine instead. The nature of the mutation conferring T4 resistance ( tfr-8 is unknown.
• References:
  • Jones-Mortimer, MC 1968. Positive control of sulphate reduction in Escherichia coli. Isolation, characterization and mapping oc cysteineless mutants of E. coli K12. Biochem. J. 110(3):589-95.
  
  

  To request this strain visit the ECGRC website.

  
  

  Printable Strain Report