Article
Overproduction and increased molecular weight account for the symbiotic activity of the rkpZ-modified K polysaccharide from Sinorhizobium meliloti Rm1021.
Glycobiology - 1 Dec 2006
Sharypova L A, Chataigné G, Fraysse N, Becker A, Poinsot V
Abstract excerpt
K polysaccharides (KPSs) of Sinorhizobium meliloti strains are strain-specific surface polysaccharides analogous to the group II K antigens of Escherichia coli. The K(R)5 antigen of strain AK631 is a highly polymerized disaccharide of pseudaminic and glucuronic acids. During invasion of host plants, this K antigen is able to replace the structurally different exopolysaccharide succinoglycan (EPS I) and promotes...
Topics
- Bacterial Proteins
- Genes, Bacterial
- Genome, Bacterial
- Magnetic Resonance Spectroscopy
- Molecular Weight
- Mutation
- Plasmids
- Polysaccharides, Bacterial
- Sinorhizobium meliloti
- Spectrometry, Mass, Electrospray Ionization
- Sugar Acids
- Symbiosis