D.A. Rowe-Magnus <dean.rowe-magnus
Institute for Biological Sciences, National Research Council, 100 Sussex Dr., Ottawa, Ont., Canada K1A 0R6, Department of Molecular and Cellular Biology, University of Guelph, 488 Gordon Street, New Science Complex, Guelph, ON, Canada N1G 2W1, Division of Clinical Integrative Biology, Sunnybrook Health Sciences Centre, 2075 Bayview Avenue, S1-26A, Toronto, Ontario, Canada M4N 3N5, Department of Laboratory Medicine and Pathobiology, Faculty of Medicine, University of Toronto, Toronto, Canada
The structure of the lipopolysaccharide core of Vibrio vulnificus type strain 27562 is presented. LPS hydrolysis gave two oligosaccharides, OS-1 and OS-2, as well as lipid A. NMR spectroscopic data corresponded to the presence of one Kdo residue, one β-glucopyranose, three heptoses, one glyceric acid, one acetate, three PEtN, and one 5,7-diacylamido-3,5,7,9-tetradeoxynonulosonic acid residue (pseudaminic acid, Pse) in OS1. OS2 differed form OS 1 by the absence of glyceric acid, acetate, and Pse residues. Lipid A was analyzed for fatty acid composition and the following fatty acids were found: C14:0, C12:0-3OH, C16:0, C16:1, C14:0-3OH, C18:0, C18:1 in a ratio of 1:3:3:1:2.5:0.6:0.8.
13C NMR, 1H NMR, methylation, NMR-2D, GC-MS, sugar analysis, dephosphorylation, 31P NMR, ESI-MS, mild acid hydrolysis, alkaline degradation, GC, NMR-1D, immunoblotting, PAGE, N-acetylation, partial de-O-acylation
extracted from seafood. NMR assignment of #0,6_bDGlcpN H2 (4.15) might be erroneous.
13C NMR data:
Linkage Residue C1 C2 C3 C4 C5 C6 C7 C8
0,6,6,5,3,2 aXLDmanHepp
0,6,6,5,3 aXLDmanHepp
0,6,6,5,2,0 xXEtN
0,6,6,5,2 P
0,6,6,5,4,6 bXPsep
0,6,6,5,4 bDGlcp
0,6,6,5,7,0 xXEtN
0,6,6,5,7 P
0,6,6,5 aXDDmanHepp
0,6,6,4 P
0,6,6,8 P
0,6,6 ?XKdop ? ? 36.0 71.9 74.2 73.3 69.9 68.8
0,6,4 P
0,6 bDGlcpN 100.7 57.6 73.7 76.3 75.9 64.6
0 aDGlcpN
P
1H NMR data:
Linkage Residue H1 H2 H3 H4 H5 H6 H7 H8
0,6,6,5,3,2 aXLDmanHepp
0,6,6,5,3 aXLDmanHepp
0,6,6,5,2,0 xXEtN
0,6,6,5,2 P
0,6,6,5,4,6 bXPsep
0,6,6,5,4 bDGlcp
0,6,6,5,7,0 xXEtN
0,6,6,5,7 P
0,6,6,5 aXDDmanHepp
0,6,6,4 P
0,6,6,8 P
0,6,6 ?XKdop - - 2.12-2.38 4.63 4.37 3.97 3.88 4.11-4.19
0,6,4 P
0,6 bDGlcpN 4.90 4.15 3.89 3.90 3.76 3.63-3.78
0 aDGlcpN
P
1H/13C HSQC data:
Linkage Residue C1/H1 C2/H2 C3/H3 C4/H4 C5/H5 C6/H6 C7/H7 C8/H8
0,6,6,5,3,2 aXLDmanHepp
0,6,6,5,3 aXLDmanHepp
0,6,6,5,2,0 xXEtN
0,6,6,5,2 P
0,6,6,5,4,6 bXPsep
0,6,6,5,4 bDGlcp
0,6,6,5,7,0 xXEtN
0,6,6,5,7 P
0,6,6,5 aXDDmanHepp
0,6,6,4 P
0,6,6,8 P
0,6,6 ?XKdop 36.0/2.12-2.38 71.9/4.63 74.2/4.37 73.3/3.97 69.9/3.88 68.8/4.11-4.19
0,6,4 P
0,6 bDGlcpN 100.7/4.90 57.6/4.15 73.7/3.89 76.3/3.90 75.9/3.76 64.6/3.63-3.78
0 aDGlcpN
P