Gene rgpG is required for biosynthesis of rhamnose-glucose polysaccharide (RGP) in Streptococcus mutans. Its deduced amino acid sequence had similarity to WecA, which initiates syntheses of enterobacterial common antigen and some O antigens in Escherichia coli. Gene rgpG complemented a wecA mutation of E. coli, suggesting that rgpG may function similarly in RGP synthesis.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC103797PMC
http://dx.doi.org/10.1128/JB.181.20.6556-6559.1999DOI Listing

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