Institute for Biological Sciences, National Research Council, Ottawa, Ontario K1A OR6, Canada, Department of Molecular and Cellular Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada, Carlsberg Laboratory, DK 2500 Valby Copenhagen, Denmark, NICHD, National Institutes of Health, Bethesda, MD, USA
The structure of the carbohydrate part of the LPS from several strains of Bordetella bronchiseptica and Bordetella parapertussis was analyzed using different chemical degradations, NMR spectroscopy and mass spectrometry. It was found that, in addition to previously known structures of the core and O-chain, all studied LPSs contain a specific pentasaccharide fragment linking these two structural regions. This fragment is attached to 'band A' trisaccharide in B. bronchiseptica LPS and to the core GlcN in B. parapertussis LPS. LPSs from different strains contain variable amount of amidated diaminouronic acids in the polysaccharide chain. Together with previously known structural details these new data present a complete structure of the LPS carbohydrate backbone for both bordetellae species. Two types of O-chain terminal monosaccharide have been found in all analyzed strains of B. bronchiseptica, and only one of them in B. parapertussis LPS
13C NMR data:
Linkage Residue C1 C2 C3 C4 C5 C6
4,6,3,4,6,3,2 Ac
4,6,3,4,6,3,3 Ac
4,6,3,4,6,3 bDManpN3NA 101.0 52.1 54.3 67.1 79.3 175.3
4,6,3,4,6,2 Ac
4,6,3,4,6,4 %Me 36.7
4,6,3,4,6 bDFucpN4N 102.7 51.8 79.4 63.5 69.1 17.3
4,6,3,4,2 Ac
4,6,3,4 aDGlcpN 98.0 54.6 71.5 70.5 71.9 68.8
4,6,3,2 Ac
4,6,3,3 Ac
4,6,3 bDManpN3NA 101.0 52.5 54.4 71.4 79.3 175.3
4,6,2 Ac
4,6,4 %Me 36.7
4,6 bDFucpN4N 102.7 51.8 79.4 63.5 69.1 17.3
4 aDGlcpN ? 55.3 70.4 70.5 73.0 69.7
6 aDGalpNA 96.8 51.7 67.5 70.2 72.5 173.7
aDGlcp ? 72.0 73.8 77.2 71.7 68.3
1H NMR data:
Linkage Residue H1 H2 H3 H4 H5 H6
4,6,3,4,6,3,2 Ac
4,6,3,4,6,3,3 Ac
4,6,3,4,6,3 bDManpN3NA 5.03 4.38 4.04 3.63 3.92 -
4,6,3,4,6,2 Ac
4,6,3,4,6,4 %Me 2.86
4,6,3,4,6 bDFucpN4N 4.52 3.72 4.12 3.72 3.98 1.40
4,6,3,4,2 Ac
4,6,3,4 aDGlcpN 5.02 3.70 3.60 3.37 3.70 3.80-3.99
4,6,3,2 Ac
4,6,3,3 Ac
4,6,3 bDManpN3NA 5.00 4.25 4.21 3.86 3.86 -
4,6,2 Ac
4,6,4 %Me 2.82
4,6 bDFucpN4N 4.48 3.72 4.09 3.69 3.98 1.40
4 aDGlcpN 5.55 3.28 3.78 3.37 3.75 3.68-4.11
6 aDGalpNA 5.25 3.51 4.13 4.32 4.47 -
aDGlcp 5.60 3.62 3.92 3.66 4.09 3.82
1H/13C HSQC data:
Linkage Residue C1/H1 C2/H2 C3/H3 C4/H4 C5/H5 C6/H6
4,6,3,4,6,3,2 Ac
4,6,3,4,6,3,3 Ac
4,6,3,4,6,3 bDManpN3NA 101.0/5.03 52.1/4.38 54.3/4.04 67.1/3.63 79.3/3.92
4,6,3,4,6,2 Ac
4,6,3,4,6,4 %Me 36.7/2.86
4,6,3,4,6 bDFucpN4N 102.7/4.52 51.8/3.72 79.4/4.12 63.5/3.72 69.1/3.98 17.3/1.40
4,6,3,4,2 Ac
4,6,3,4 aDGlcpN 98.0/5.02 54.6/3.70 71.5/3.60 70.5/3.37 71.9/3.70 68.8/3.80-3.99
4,6,3,2 Ac
4,6,3,3 Ac
4,6,3 bDManpN3NA 101.0/5.00 52.5/4.25 54.4/4.21 71.4/3.86 79.3/3.86
4,6,2 Ac
4,6,4 %Me 36.7/2.82
4,6 bDFucpN4N 102.7/4.48 51.8/3.72 79.4/4.09 63.5/3.69 69.1/3.98 17.3/1.40
4 aDGlcpN ?/5.55 55.3/3.28 70.4/3.78 70.5/3.37 73.0/3.75 69.7/3.68-4.11
6 aDGalpNA 96.8/5.25 51.7/3.51 67.5/4.13 70.2/4.32 72.5/4.47
aDGlcp ?/5.60 72.0/3.62 73.8/3.92 77.2/3.66 71.7/4.09 68.3/3.82