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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Genetic and molecular characterization of the guaC- nadC-aroP region of Escherichia coli K-12.

The guaC (GMP reductase), nadC (quinolinate phosphoribosyltransferase), and aroP (aromatic amino acid permease) genes of Escherichia coli K-12 were located in the 2.5-min region of the chromosome (muT-guaC-nadC-aroP-aceE) by a combination of linkage analysis, deletion mapping, restriction analysis, and plasmid subcloning. The guaC locus expressed a product of Mr 37,000 with a clockwise transcriptional polarity, and the GMP reductase activities of guaC+ plasmid-containing strains were amplified 15- to 20-fold.[1]


  1. Genetic and molecular characterization of the guaC-nadC-aroP region of Escherichia coli K-12. Roberts, R.E., Lienhard, C.I., Gaines, C.G., Smith, J.M., Guest, J.R. J. Bacteriol. (1988) [Pubmed]
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