O-Antigen Description

Serogroup:O174 ac
Serotype H:28
Serotype K:
Strain:2188
Structure:
bDGlcNAc(1->2)
            |
     ->4)bDGlcA(1->3)bDGal(1->3)bDGlcNAc(1->
Comment:- Structure [1]
- The name of O174ac is proposed here until decided otherwise
NMR
1H-NMR4.81 3.68 3.56 3.37 3.48 3.72 3.94 2.05 4.78 3.64 3.68 3.80 3.70 4.56 3.84 3.75 3.56 3.50 3.78 3.92 2.02 4.50 3.67 3.74 4.09 3.90 3.72 3.95
Solvent: D2O
Temp: 27/42C
pD:
Ref: Acetone 31.45 ppm
Comment: 13C-NMR [1]
In case of two shifts for some hydrogen, the latter is when bDGlcA is terminal
13C-NMR103.21 57.11 74.70 71.33 77.42 62.27 23.45 176.08 103.70 81.45 75.59 81.10 76.26 176.08 102.14 55.40 84.09 69.69 76.52 61.70 23.82 175.78 104.17 70.84 85.07 68.82 75.58 62.14
Solvent: D2O
Temp: 27/42C
pD:
Ref: Acetone 2.225 ppm
Comment: 1H-NMR [1]
In case of two shifts for some carbons, the latter is when bDGlcA is terminal
Literature
  • First Author: Duda KA. "Structural studies of the O-antigenic polysaccharide of the bovine mastitis isolate Escherichia coli serotype O174". Carbohydrate Research. 373. (2013), pp 18-21 PubMed: [23567515]