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

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Strain JBK239

• CGSC#: 5820
• Strain Designation

  Designation	Source	Preference
  JBK239	Kirschbaum J.B.	1
  X239		2

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

  Mutation	Location	Certainty	Display
  lacY1	7.79	1	lacY1
  glnX44(AS)	14.99	1	glnX44(AS)
  gal-6	16.96	1	gal-6
  LAM-	17.40	0	λ-
  hisG1	45.01	1	hisG1
  mgl-2	48.17	0	mgl-2
  xyl-7	80.34	1	xyl-7
  mtlA2	81.26	1	mtlA2
  metB1	88.94	1	metB1
  argH1(del)	89.55	1	ΔargH1
  btuB51	89.70	1	btuB51
  rplL9(L?)	90.06	1	rplL9(L?)
  thiE1	90.34	1	thiE1
  purD62	90.58	1	purD62

  
  
• Comments:
• References:
  • Kirschbaum, JB, IV Claeys, S Nasi, B Molholt, JH Miller 1975. Temperature-sensitive RNA polymerase mutants with altered subunit synthesis and degradation. Proc. Natl. Acad. Sci. U.S.A. 72(6):2375-9.
  
  

  Printable Strain Report