期刊
JOURNAL OF BACTERIOLOGY
卷 182, 期 9, 页码 2672-2674出版社
AMER SOC MICROBIOLOGY
DOI: 10.1128/JB.182.9.2672-2674.2000
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Genes for D-galactarate (gar) and D-glucarate (gud) metabolism in Escherichia coli are organized in three transcriptional units: garD, garPLRK, and gudPD. Two observations suggested a common regulator for the three operons. (i) Their expression was triggered by D-galactarate, D-glucarate, and D-glycerate. (ii) Metabolism of the three compounds was impaired by a single Tn5 insertion mapped in the yaeG gene (proposed name, sdaR), outside the D-galactarate and D-glucarate systems. Expression of the sdaR gene is autogenously regulated.
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