RES
1r:r1
REP
REP1:6o(2+1)2d=-1--1
RES
2b:a-dman-HEX-1:5
3b:a-dman-HEX-1:5
4b:a-dman-HEX-1:5
5b:a-dman-HEX-1:5
6b:a-dman-HEX-1:5
LIN
1:2o(3+1)3d
2:3o(3+1)4d
3:4o(2+1)5d
4:5o(2+1)6d

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• Kido N et al. A single amino acid substitution in a mannosyltransferase, WbdA, converts the Escherichia coli O9 polysaccharide into O9a: generation of a new O-serotype group. J Bacteriol. 2000 May;182:(9):2567-73. doi: 10.1128/jb.182.9.2567-2573.2000. PMID: 10762260.

• Stenutz R et al. The structures of Escherichia coli O-polysaccharide antigens. FEMS Microbiol Rev. 2006 May;30:(3):382-403. doi: 10.1111/j.1574-6976.2006.00016.x. PMID: 16594963.

• Greenfield LK et al. Synthesis of lipopolysaccharide O-antigens by ABC transporter-dependent pathways. Carbohydr Res. 2012 Jul 15;356:12-24. doi: 10.1016/j.carres.2012.02.027. PMID: 22475157.

• Clarke BR et al. Nonreducing terminal modifications determine the chain length of polymannose O antigens of Escherichia coli and couple chain termination to polymer export via an ATP-binding cassette transporter. J Biol Chem. 2004 Aug 20;279:(34):35709-18. doi: 10.1074/jbc.M404738200. PMID: 15184370.