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. 1993 Mar;175(5):1524–1527. doi: 10.1128/jb.175.5.1524-1527.1993

The rfaS gene, which is involved in production of a rough form of lipopolysaccharide core in Escherichia coli K-12, is not present in the rfa cluster of Salmonella typhimurium LT2.

J D Klena 1, E Pradel 1, C A Schnaitman 1
PMCID: PMC193241  PMID: 8444813

Abstract

Partial sequencing of the rfa cluster of Salmonella typhimurium LT2 indicated a region of 336 bp between rfaP and rfaB in the site occupied by the rfaS gene in Escherichia coli K-12. This region does not contain a functional rfaS gene, although DNA analysis suggests that the region may have contained an ancestral gene. This conclusion that S. typhimurium LT2 lacks rfaS is supported by its lipopolysaccharide (LPS) gel phenotype, since LT2 does not make the lipooligosaccharide band characteristic of LPS from smooth strains of E. coli K-12.

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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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