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Identification of homologs of polysaccharide biosynthesis proteins in M. xanthus. (A) Schematic of the three pathways for polysaccharide biosynthesis in Gram-negative bacteria. (B) Bioinformatics-based identification of homologs of polysaccharide biosynthesis proteins in M. xanthus. Color code is the same as that used for panel A. Note that WaaL is the LPS O-antigen ligase (37), while the remaining three proteins with a Wzy_C domain are predicted polymerases.
