Le. Comstock et al., Interstrain variation of the polysaccharide B biosynthesis locus of Bacteroides fragilis: Characterization of the region from strain 638R, J BACT, 181(19), 1999, pp. 6192-6196
The sequence and analysis of the capsular polysaccharide biosynthesis locus
, PS B2, of Bacteroides fragilis 638R are described, and the sequence is co
mpared with that of the PS B1 biosynthesis locus of B. fragilis NCTC 9343.
Two genes of the region, wcgD and wcgC, are shown by complementation to enc
ode a UDP-N-acetylglucosamine 2-epimerase and a UDP-N-acetylmannosamine deh
ydrogenase, respectively.