PMID:1732225

Citation	Parker, CT, Pradel, E and Schnaitman, CA (1992) Identification and sequences of the lipopolysaccharide core biosynthetic genes rfaQ, rfaP, and rfaG of Escherichia coli K-12. J. Bacteriol. 174:930-4
Abstract	The rfa locus of Escherichia coli K-12 includes a block of about 10 closely spaced genes transcribed in the same direction which are involved in synthesis and modification of the hexose region of the lipopolysaccharide core. We have sequenced the first three genes in this block. The function of the first of these genes is unknown, but we have designated it rfaQ on the basis of its location and similarity to other rfa genes. Complementation of Salmonella typhimurium rfa mutants with E. coli rfa restriction fragments indicated that the second and third genes in the block were rfaG and rfaP. The deduced sizes of the RfaQ, RfaG, and RfaP proteins are 36,298, 42,284, and 30,872 Da, respectively, and the proteins are basic and lack extensive hydrophobic domains. RfaQ shares regions of homology with proteins RfaC and RfaF, which are involved in synthesis of the heptose region of the core. Proteins RfaB, RfaG, and RfaK share a region of homology, which suggests that they belong to a second family of Rfa proteins which are thought to be hexose transferases.
Links	PubMed PMC206172
Keywords	Amino Acid Sequence; Base Sequence; Escherichia coli/genetics; Genes, Bacterial/genetics; Genetic Complementation Test; Lipopolysaccharides/biosynthesis; Lipopolysaccharides/genetics; Molecular Sequence Data; Mutation; Salmonella typhimurium/genetics; Sequence Homology, Nucleic Acid
edit table

Significance

You can help EcoliWiki by summarizing why this paper is useful

Useful Materials and Methods

You can help Ecoliwiki by describing the useful materials (strains, plasmids, antibodies, etc) described in this paper.

Annotations

<annotationlinks/>

EcoliWiki Links

Add links to pages that link here (e.g. gene, product, method pages)

References

See Help:References for how to manage references in EcoliWiki.