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J Bacteriol. 1985 November; 164(2): 717-722

araB Gene and nucleotide sequence of the araC gene of Erwinia carotovora.

ABSTRACT

The araB and araC genes of Erwinia carotovora were expressed in Escherichia coli and Salmonella typhimurium. The araB and araC genes in E. coli, E. carotovora, and S. typhimurium were transcribed in divergent directions. In E. carotovora, the araB and araC genes were separated by 3.5 kilobase pairs, whereas in E. coli and S. typhimurium they were separated by 147 base pairs. The nucleotide sequence of the E. carotovora araC gene was determined. The predicted sequence of AraC protein of E. carotovora was 18 and 29 amino acids longer than that of AraC protein of E. coli and S. typhimurium, respectively. The DNA sequence of the araC gene of E. carotovora was 58% homologous to that of E. coli and 59% homologous to that of S. typhimurium, with respect to the common region they share. The predicted amino acid sequence of AraC protein was 57% homologous to that of E. coli and 58% homologous to that of S. typhimurium. The 5' noncoding regions of the araB and araC genes of E. carotovora had little homology to either of the other two species.

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