Table 1 O-acetyltransferases of S. flexneri from different serotypes

oac

1b,3a,3b,4b and 7b

2-O-acetylation at Rhamanose(Rha) I

Sf6

[3]

oacB

1a, 1b, 2a, 5a, Y, 6 and 1c.

2a,3a, Y and Yv

¾ O-acetylation of RhaIII

Position 6 of N acetyl glucosamine (GlcNAc)

Sf101

[7]

oacC

Serotype 6

¾ O-acetylation RhIII

Phage-like structure

[15]

oacD

Serotype 2

6-O-acetylation of N-acetylglucosamine

(GlcNAc)

SfII

[16]

oac1b

1b

2-O acetylation at RhaIII

Novel phage

[17]