Molecular characterization of an adenylate cyclase gene of the cyanobacterium Spirulina platensis |
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Authors: | Kumiko Yashiro Toshio Sakamoto Masayuki Ohmori |
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Institution: | (1) Department of Biology, Graduate School of Arts and Sciences, University of Tokyo, Komaba 3-8-1, 153 Meguro-ku, Tokyo, Japan |
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Abstract: | A cyaA gene, encoding an adenylate cyclase, was isolated from a filamentous cyanobacterium, Spirulina platensis, by functional complementation of a cya mutant of Escherichia coli, defective in adenylate cyclase activity. The predicted gene product of cyaA contains a signal peptide-like domain, a putative sensor domain similar to the gene product of vsrA of Pseudomonas solanacearum, a putative membrane-spanning domain and an adenylate cyclase-like catalytic domain. Two other positive clones that complemented the E. coli mutant were isolated from the same cyanobacterium, suggesting that several cya genes are functioning in S. platensis. |
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Keywords: | cyanobacterium adenylate cyclase gene cAMP VsrA Spirulina platensis |
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