O-Antigen Description

Serogroup:O128 ab
Serotype H:27
Serotype K:
Strain:87/D2
Structure:
  ->6)bDGal(1->3)bDGalNAc(1->4)aDGalNAc(1->3)bDGalNAc(1->
         |
aLFuc(1->2)
Comment:- Structure [1]
- Has a higher reactivity with O128ab serum compared to O128ac, albeit not as strong as pure O128ab.
NMR
1H-NMR5.22 3.76 3.64 3.72 4.22 1.21 5.04 4.07 3.89 4.13 3.80 3.71, 3.87 4.60 3.62 3.80 3.88 3.76 3.87, 3.93 4.54 4.02 3.76 4.07 3.62 3.78 4.51 3.99 3.91 4.02 3.69 3.78
Solvent: D2O
Temp: 25
pD:
Ref: TSP 0 ppm
Comment: - 1H-NMR [1]
- NMR data is for OPS
13C-NMR100.1 68.8 70.3 72.7 67.6 16.4 94.8 50.4 68.4 75.8 71.3 61.0 102.9 76.8 74.4 69.5 73.5 68.8 102.2 51.5 76.1 64.7 76.0 62.0 104.2 52.2 77.3 69.4 75.6 62.0
Solvent: D2O
Temp: 25
pD:
Ref: Dioxane 67.40 ppm
Comment: - 13C-NMR [1]
- NMR data is for OPS
Literature
  • First Author: Ali T. "Structural studies of the O-antigenic polysaccharides from the enteroaggregative Escherichia coli strain 87/D2 and international type strains from E. coli O128". Carbohydrate Research. 343. (2008), pp 695-702 PubMed: [18237721]