O-Antigen Description

Serogroup:O181
Serotype H:
Serotype K:
Strain:
Structure:
 aLQuiNAc(1->3)
             |
      ->4)aDGalNAc6Ac(1->6)aDGlc(1->P-4)aLQuiNAc(1->3)bDGlcNAc(1->
Comment:- Structure [2]
- Contains 0.4 O-acetyl groups/repeating unit
GTs
GT nameDonorAcceptorPosition | Link.NumSimilar to
O181_02
ncbi CAZy
- Reference [3]
GT nameDonorAcceptorPosition | Link.NumSimilar to
O181_03

aDGlc(1->

GT NameDonorAcceptorScore / e-value
O160-O160_07


213 / 1e-67
O152-WfgC


158 / 1e-46
O173-WcmV

aDGlc(1->

P->6)aDGlc

145 / 4e-42
ncbi CAZy
- Reference [3]
GT nameDonorAcceptorPosition | Link.NumSimilar to
O181_07

aLQuiNAc(1->

->3)bDGlcNAc

GT NameDonorAcceptorScore / e-value
O151-WbfG


385 / 6e-135
O118-WbfG


385 / 6e-135
O15-WbuB


385 / 2e-134
O177-WbuB


383 / 9e-134
O25-WbuB


383 / 7e-134
O4-WbuB

aLFucNAc(1->

->3)bDGlcNAc

382 / 2e-133
O172-WbuB

aLFucNAc(1->

->3)aDGlcNAc

381 / 5e-133
O145-WbuB

aLFucNAm(1->

->3)bDGlcNAc

380 / 1e-132
O12-O012_09


380 / 3e-133
O29-WbuB


378 / 6e-132
O108-O108_18


377 / 1e-131
O26-WbuB

aLFucNAc(1->

->3)bDGlcNAc

373 / 2e-130
O98-WbwW

aLQuiNAc(1->

->3)bDGlcNAc

359 / 1e-124
O123-WbwH


345 / 6e-119
O163-O163_11


338 / 2e-116
O186-O186_16


335 / 2e-115
ncbi CAZy
- Reference [3]
GT nameDonorAcceptorPosition | Link.NumSimilar to
O181_11
ncbi CAZy
- Reference [3]
NMR
1H-NMR5.562 3.584 3.727 3.584 3.995 3.708 4.009 5.165 3.567 3.972 3.525 3.472 3.762 3.916 2.118 4.970 3.988 3.865 3.863 4.218 1.286 2.085 4.945 3.968 3.626 3.306 3.683 1.317 2.076 4.861 4.427 4.085 4.334 4.044 3.720 3.768 1.980
Solvent: D2O
Temp: 70
pD:
Ref: TSP 0 ppm
Comment: 1H-NMR [2]
13C-NMR96.06 72.31 73.79 70.02 72.57 66.53 99.28 57.73 79.14 69.87 76.87 61.80 23.53 174.90 98.04 54.28 70.96 81.24 67.80 17.34 23.03 174.79 99.20 54.28 71.91 76.07 69.80 17.38 23.19 174.61 98.47 50.06 74.75 72.11 72.06 61.75 22.89 174.55
Solvent: D2O
Temp: 70
pD:
Ref: Dioxane 67.40 ppm
Comment: 13C-NMR [2]
Non-Sugar Components
- Acetate
Literature
  • First Author: Scheutz F. "Designation of O174 and O175 to temporary O groups OX3 and OX7, and six new E. coli O groups that include Verocytotoxin-producing E. coli (VTEC): O176, O177, O178, O179, O180 and O181". Acta Pathologica, Microbiologica, et Immunologica Scandinavica. 112. (2004), pp 569-584 PubMed: [15601305]
  • First Author: Fontana C. "Structural elucidation of the O-antigen polysaccharide from Escherichia coli O181". ChemistryOpen. 4. (2015), pp 47-55