| Literature DB >> 2447059 |
N K Verma1, N B Quigley, P R Reeves.
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.Entities:
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Year: 1988 PMID: 2447059 PMCID: PMC210612 DOI: 10.1128/jb.170.1.103-107.1988
Source DB: PubMed Journal: J Bacteriol ISSN: 0021-9193 Impact factor: 3.490