Piezoresponse of the cyo-Operon Coding for Quinol Oxidase Subunits in a Deep-sea Piezophilic Bacterium, Shewanella violacea
- 1 January 2001
- journal article
- Published by Oxford University Press (OUP) in Bioscience, Biotechnology, and Biochemistry
- Vol. 65 (3) , 690-693
- https://doi.org/10.1271/bbb.65.690
Abstract
We have isolated the genes for quinol oxidase from a deep-sea piezophilic bacterium, Shewanella violacea. Analysis of the deduced amino acid sequences of the cyo subunits showed that this oxidase has high similarity to Escherichia coli bo-type quinol oxidase. Northern blot analysis showed that these genes are expressed at a high level when the bacterium is grown at elevated pressure. Upstream in the cyo-operon, a sigma54-binding motif and an octamer sequence unit were found, suggesting that these elements may play a role in regulation of expression of the cyo-operon in response to changes in pressure.Keywords
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