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. 1988 Jan;170(1):103–107. doi: 10.1128/jb.170.1.103-107.1988

O-antigen variation in Salmonella spp.: rfb gene clusters of three strains.

N K Verma 1, N B Quigley 1, P R Reeves 1
PMCID: PMC210612  PMID: 2447059

Abstract

The O antigens of Salmonella serogroups A, B, and D differ structurally in their side-chain sugar residue. These genes encoding O-antigen biosynthesis are clustered in the rfb operon. We report here the molecular cloning and analysis of the rfb operons of Salmonella paratyphi A (serogroup A) and S. typhi (serogroup D). The regions of DNA nonhomology between the rfb operons of these serogroup A, B, and D representatives are identified, and the evolutionary derivation of serogroup A from a serogroup D progenitor is discussed.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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