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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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An adenylyl cyclase, CyaB, acts as an osmosensor in Myxococcus xanthus.

We have previously reported that a receptor-type adenylyl cyclase (CyaA) of Myxococcus xanthus undergoes an osmosensor mainly during spore germination (Y. Kimura et al., J. Bacteriol. 184:3578-3585, 2002). In the present study, we cloned another receptor-type adenylyl cyclase gene (cyaB) and characterized the function of the cyaB-encoded protein. Disruption of cyaB generates a mutant that showed growth retardation at high ionic (NaCl) or high nonionic (sucrose) osmolarity. When vegetative cells were stimulated with 0.15 M NaCl, the increases in intracellular cyclic AMP levels of cyaB mutant cells were lower than those of wild-type cells. Under nonionic osmostress, the cyaB mutant exhibited reduced spore germination; however, the germination rate of the cyaB mutant was significantly higher than that of the cyaA mutant.[1]

References

  1. An adenylyl cyclase, CyaB, acts as an osmosensor in Myxococcus xanthus. Kimura, Y., Ohtani, M., Takegawa, K. J. Bacteriol. (2005) [Pubmed]
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