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

About the CGSC

• CGSC Home
• Scope of the Collection
• The Database
• Privacy Policy
• Acknowledgment of Support

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

• Contact Information
• Charges
• Reviving Strains
• Strains Not Found?

Other CGSC Information

• FAQ on Procedures
• Current Working Map
• 1998 MMBR Map
• 1998 MMBR Gene List
• Map Diagrams (PDFs)

Other Links

• E. coli Links
• Other Stock Collections
• Other Bio Links
• Yale Web

Funded by a grant from the National Science Foundation

Strain D21e19

• CGSC#: 5160
• Strain Designation

  Designation	Source	Preference
  D21e19	Boman H.G.	1

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

  Mutation	Location	Certainty	Display
  proA23	5.62	1	proA23
  lac-28	8.00	1	lac-28
  tsx-81	9.28	1	tsx-81
  trp-30	28.00	1	trp-30
  his-51	44.00	1	his-51
  rpsL173(strR)	74.84	1	rpsL173(strR)
  rfa-11	81.69	1	rfa-11
  ampCp-1	93.80	1	ampCp-1

  
  
• Comments:
• References:
  • Eriksson-Grennberg, K.G., K. Nordstrom, P. Englund 1971. Resistance of Escherichia coli to penicillins. IX. Genetics and physiology of Class II ampicillin-resistant mutants that are galactose negative or sensitive to Bacteriophage C21, or both. J.Bact
  
  

  Printable Strain Report