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Laboratory of Parasitic Diseases, National Institutes of Health, Bethesda, Maryland 20892, USA.
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A Bacillus subtilis dipeptide transport system expressed early during sporulation
Article first published online: 27 OCT 2006
DOI: 10.1111/j.1365-2958.1991.tb00814.x
Additional Information
How to Cite
Mathiopoulos, C., Mueller, J. P., Slack, F. J., Murphy, C. G., Patankar, S., Bukusoglu, G. and Sonenshein, A. L. (1991), A Bacillus subtilis dipeptide transport system expressed early during sporulation. Molecular Microbiology, 5: 1903–1913. doi: 10.1111/j.1365-2958.1991.tb00814.x
Publication History
- Issue published online: 27 OCT 2006
- Article first published online: 27 OCT 2006
- Received 13 March, 1991; revised 16 May, 1991.
- Abstract
- References
- Cited By
Summary
Two previously identified Bacillus subtilis DNA segments, dciA and dciB, whose transcripts accumulate very rapidly after induction of sporulation, were found in the same 6.2 kb transcription unit, now known as the dciA operon. Analysis of the sequence of the dciA operon showed that its putative products are homologous to bacterial peptide transport systems. The product of the fifth gene, DciAE, is similar to peptide-binding proteins from Escherichia coli and Salmonella typhimurium (DppA and OppA) and B. subtilis (OppA). A null mutation in dciAE abolished the ability of a proline auxotroph to grow in a medium containing the dipeptide Pro–Gly as sole proline source, suggesting that the dciA operon encodes a dipeptide transport system.