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Table 3 LPS types of 298 Y. enterocolitica BT 1A strains and 84 Y. enterocolitica strains of other biotypes

From: Clinical isolates of Yersinia enterocolitica Biotype 1A represent two phylogenetic lineages with differing pathogenicity-related properties

LPS-type Subtype Descriptionc Commentsd Known O-serotypes with similar LPS[56] No. of strains (n=382)
A. Homopolymeric O-PS
  A1a Short   O:41(27)43, O:41,43 7
  A2b Medium   O:10 25
  A2 Medium BT 2 strains O:9 5
  A3a Long    3
  A3 Long BT 3–4 strains O:1, O:2, O:3 77
B. Heteropolymeric O-PS
  B1a a, B1b a 2/M/1 B1b strains carry homopolymer O:13,18 8
  B1c a, B1d a 2+w/M/1–2 B1d strains carry homopolymer O:25 9
  B2a a, B2b a 2/L/1 B2b strains carry homopolymer O:7,8, O:13,7 22
  B2c a, B2d a 2+w/L/1–2 B2d strains carry homopolymer O:50 55
  B3 a 5–6+w/M/3–6   O:14, O:34, O:4,32 4
  B4 a >5/M/7–10   O:4, O:8, O:21, O:35,52 1
C. Single length O-PS
  C1 a, SL 15-mer   O:6, O:6,30, O:6,31 109
  C2 a SL 30-mer   O:5, O:5,27 45
D. Rough or semi-rough
  D a   May include rough laboratory mutants O:15, O:28,50, O:35,36 12
  1. a Biotype 1A, Genetic group 1.
  2. b Biotype 1A, Genetic group 2.
  3. c Homopolymeric O-PS length estimated by migration in DOC-PAGE; heteropolymeric O-PS is described by X/Y/Z, where X = number of steps in O-PS ladder (+ w indicates a faint extra step); Y = size of step (M, medium; L, long); Z = average modality of steps; Single length O-PS migrates as one band with estimated number of sugar residues.
  4. d The biotype of the strains is 1A unless otherwise indicated. The presence of homopolymeric O-PS was visible as a smear above the short ladders and not always easy to distinguish in silver-stained DOC-PAGE gels.