TABLE 1.

Structures of H. influenzae capsular polysaccharidea

TypeStructureb
a4)-β-d-Glc-(1 → 4)-d-ribitol-5-(PO4
b3)-β-d-Rib-(1 → 1)-d-ribitol-5-(PO4
c4)-β-d-GlcNAc-(1 → 3)-α-d-Gal-1-(PO4
3
↑R = OAc (0.8)
|H (0.8)
R
d4)-β-d-GlcNAc-(1 → 3)-β-d-ManANAc-(1 →
6
|R = l-serine (0.41)
|l-threonine (0.14)
Rl-alanine (0.41)
e3)-β-d-GlcNAc-(1 → 4)-β-d-ManANAc-(1 →
e′3)-β-d-GlcNAc-(1 → 4)-β-d-ManANAc-(1 →
3
2
β-d-fructose
f3)-β-d-GalNAc-(1 → 4)-α-d-GalNAc-1-(PO4
3
OAc
  • a Reprinted from reference 40.

  • b Ribose and fructose are in the furanose ring form; Glc, Gal, GlcNAc, GalNAc, and ManANAc are in the pyranose ring form.