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In Vitro Characterization of a Recombinant AHL-Lactonase from Bacillus cereus Isolated from a Striped Catfish (Pangasianodon hypophthalmus) Pond

Indian Journal of Microbiology, ISSN: 0046-8991, Vol: 53, Issue: 4, Page: 485-487
2013
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aiiA gene encoding AHL-lactonase was isolated from Bacillus cereus strain N26.2, originating from a striped catfish (Pangasianodon hypophthalmus) pond in Vietnam. This gene, abbreviated as aiiA(N26.2), was cloned and expressed in a competent Escherichia coli strain BL21(DE3)pLysS. The resulting protein, abbreviated as AiiA, was highly active in the pH range of 6-8 and could retain 80 % of the maximum activity under storage for 5 days at 4 °C or for 3 days at 20 °C. These properties of AiiA protein confers its future application via feed supplementation, with the purpose of controlling aquaculture pathogens which regulate the virulence via a quorum sensing system. © 2013 Association of Microbiologists of India.

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