We isolated cell wall polysaccharides (PS-1 and PS-2) from Bifidobacterium infantis Reuter ATCC 15697 and found that the backbone of PS-2 is →3)-β-D-Galf-(1→3)-α-D-Galp-(1→ in which β-D-Galf and α-D-Galp are partially substituted at O-6 with β-D-Glcp. This is the first report of the presence of this disaccharide backbone in a gram-positive bacterium; it resembles the O antigen of some bacteria.

structural, polysaccharide, analysis, cell, cell wall, structural analysis, isolation, Bifidobacterium, galactofuranose

• Compound ID: 361
  

  30%b-D-Glcp-(1-6)-+ | 90%b-D-Glcp-(1-6)-+ | | | -3)-b-D-Galf-(1-3)-a-D-Galp-(1-

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  Structure type: polymer chemical repeating unit
  Compound class: EPS, cell wall polysaccharide
  Reference(s) to other database(s): GTC:G91263LC, GlycomeDB:34541
  
   
  
  Bifidobacterium infantis Reuter ATCC 15697
  CSDB ID 5215 (all data & tools)
• Compound ID: 362
  

  -3)-b-D-Galf-(1-3)-a-D-Galp-(1-

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  Structure type: polymer chemical repeating unit
  Trivial name: D-galactan I, galactan I, galactan, D-galactan, microbial carbohydrate determinants, D-galactan-I
  Compound class: CPS, EPS, O-polysaccharide, O-antigen, LPS, cell wall polysaccharide
  Reference(s) to other database(s): GTC:G85324FU, GlycomeDB:665
  
   
  
  Bifidobacterium infantis Reuter ATCC 15697, Pasteurella haemolytica
  CSDB ID 334 (all data & tools)