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Table 2 tir β gene polymorphism (aa: amino acid, A: alanine, S: serine, T: threonine, K: lysine, E: glutamic acid)

From: Study of polymorphisms in tir, eae and tccP2 genes in enterohaemorrhagic and enteropathogenic Escherichia coli of serogroup O26

  Number of strains Polymorphism 1 Polymorphism 2 Polymorphism 3 Polymorphism 4 Polymorphism 5
     (S) 1080 G => T (S) 1302 C => T (NS) 133 T => G (NS) insertion1 571 GATACAAAG (S) 939 G => A
  Human Bovine     45 aa: S => A 191 aa: TKE  
  0 2 Genotype 1 + - - - +
  2 0 Genotype 2 - + - + +
  1 0 Genotype 3 - - + - +
  25 40 Genotype 4 - - - - +
Total 28 42