cAMP-mediated catabolite repression and electrochemical potential-dependent production of an extracellular amylase in Vibrio alginolyticus
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- cAMP-mediated catabolite repression and electrochemical potential-dependent production of an extracellular amylase in Vibrio alginolyticus
- Un Ok Kim; Kyung Soo Hahm; Yong Ha Park; Young Jae Kim
- Bibliographic Citation
- Bioscience Biotechnology and Biochemistry, vol. 63, no. 2, pp. 288-292
- Publication Year
- Vibrio alginolyticus, a halophilic marine bacterium, produced an extracellular amylase with a molecular mass of approximately 56,000, and the amylase appeared to be subject to catabolite repression mediated by cAMP. The production of amylase at pH 6.5, at which the respiratory chain-linked H+ pump functions, was inhibited about 75% at 24 hours following the addition of 2μM carbonyl cyanide m-chlorophenylhydrazone (CCCP), while the production at pH 8.5, at which the respiratory chain-linked Na+ pump functions, was only slightly inhibited by the addition of 2μM CCCP. In contrast, the production of amylase in a mutant bacterium defective in the Na+ pump was almost completely inhibited even at pH 8.5 as well as pH 6.5 by the addition of 2 μM CCCP.
- Vibrio alginolyticusextracellular amylasecatabolite repressionproductionelectrochemical potential
- T&F (Taylor & Francis)
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