This is a family of diverse bacterial polysaccharide biosynthesis proteins including the CapD protein (Swiss:P39853) [1], WalL protein (Swiss:O86159) mannosyl-transferase (Swiss:O05349) [2] and several putative epimerases (e.g. WbiI Swiss:O69130).

1: Sequence analysis and molecular characterization of genes required for the biosynthesis of type 1 capsular polysaccharide in Staphylococcus aureus. Lin WS, Cunneen T, Lee CY; J Bacteriol 1994;176:7005-7016. PMID:7961465

2: Identification of additional genes required for O-antigen biosynthesis in Vibrio cholerae O1. Fallarino A, Mavrangelos C, Stroeher UH, Manning PA; J Bacteriol 1997;179:2147-2153. PMID:9079898