Abstract
A homologue of the rpoS gene of Escherichia coli was cloned from Vibrio cholerae N86 by complementation of the phenotypes of the E. coli rpoS mutant strain. We determined the DNA sequence of this gene. Sequence alignments have indicated that the rpoS gene of V. cholerae N86 encoding a 39-kDa protein is very similar to that of E. coli. In addition, the nlpD-like gene was found in the upstream region of the rpoS gene in the same order as in E. coli. These results suggest that the organization of these genes is highly conserved between E. coli and V. cholerae.
