Table 1.

Chemical structures of the CPS repeating unit backbone for the six main meningococcal serogroups; the pattern of O-acetylation is indicated

Serogroup	CPS Chemical structure
NmA	->6)-α-D-ManpNAc3/4Ac-1-P-(O->
NmB	->8)-α-D-NeupNAc-(2->
NmC	->9)-α-D-NeupNAc7/8Ac-(2->
NmW	->6)-α-D-Galp-(1->4)-α-D-NeupNAc7/9Ac-(2->
NmX	->4)-α-D-GlcpNAc-1-P-(O->
NmY	->6)-α-D-Glcp-(1->4)-α-D-NeupNAc7/9Ac-(2->