List of strains of Escherichia coli

For Escherichia coli as a species, see Escherichia coli. For Escherichia coli pathogenic strains, see Pathogenic Escherichia coli. For Escherichia coli as a model organism, see Escherichia coli (molecular biology). For the protozoan parasite that can also be abbreviated as E. coli, see Entamoeba coli.

Strains

Innocuous:

• K-12 is from a stool sample and does not seem to be pathogenic.

Laboratory:^[1]

• E. coli K-12, one of two main laboratory strains (innocuous)
  • Clifton's original K-12 and the true "wild type", which is F+ λ+ O16. Still available as ATCC 10798.^[2]
  • MG1655 "wild type", F- λ-
    • DH1
      • DH5α
        • DH10b
  • W3110 "wild type", F- λ-
  • Dam dcm strain
• E. coli B, the other of the two main lab strains from which all lab substrains originate
  • E. coli REL606
  • E. coli BL21
    • ''E. coli BL21(DE3)
    • E. coli BL21-AI
• HB101, a hybrid between B and K-12 through recombination

Pathogenic:^[1]

• Escherichia coli NC101, a single isolate that acts as an AIEC (see below) in mice with serotype O2:H6/41

Groups of strains

Taken literally, all "strains" can become a "group of strains" once random mutation is allowed to run its course. This section specifically lists groups that are not defined by common descent, but by a common phenotype (e.g. ability to cause a certain disease).

Pathogenic:^[1]

• Enterotoxigenic E. coli (ETEC)
• Enteropathogenic E. coli (EPEC)
• Enteroinvasive E. coli (EIEC)
• Shigatoxigenic and verotoxigenic Escherichia coli (STEC/VTEC), which includes:
  • Enterohemorrhagic E. coli
    • Hemolytic uremic syndrome–associated enterohemorrhagic E. coli (HUSEC)
  • E. coli O157:H7 (a group of several strains, albeit natural O157:H7 do share a common ancestor)
    • 2006 North American E. coli outbreak
  • Escherichia coli O121
  • And technically: Shigella
    • Shigella flexneri
    • Shigella dysenteriae
    • Shigella boydii
    • Shigella sonnei
• Enteroaggregative E. coli (EAEC)
  • E. coli O104:H4
    • 2011 E. coli O104:H4 outbreak
  • Escherichia coli O104:H21
• Uropathogenic E. coli (UPEC)
• Escherichia coli K1 (a serogroup), meningitis
• Adherent-invasive Escherichia coli (AIEC), morbus Crohn

See also

• Escherichia coli BL21(DE3)