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1. (Article ID: 5054)
 
Wang X, Kondakova AN, Zhu Y, Knirel YA, Han A
Structure and gene cluster of the O-antigen in Comamonas aquatica CJG
Microbiology 163(11) (2017) 1637-1640
 

Genus Comamonas is a group of bacteria that are able to degrade a variety of environmental waste. Comamonas aquatica CJG (C. aquatica) in this genus is able to absorb low-density lipoprotein but not high-density lipoprotein of human serum. Using 1H and 13C NMR spectroscopy, we found that the O-polysaccharide (O-antigen) of this bacterium is comprised of a disaccharide repeat (O-unit) of d-glucose and 2-O-acetyl-l-rhamnose, which is shared by Serratia marcescens O6. The O-antigen gene cluster of C. aquatica, which is located between coaX and tnp4 genes, contains rhamnose synthesis genes, glycosyl and acetyl transferase genes, and ATP-binding cassette transporter genes, and therefore is consistent with the O-antigen structure determined here.

O-antigen, gene cluster, O-Polysaccharide structure, Comamonas aquatica, serum absorbance

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