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Functional characterization of a major compatible solute in Deep Sea halophilic eubacteria of active volcanic Barren Island, Andaman and Nicobar Islands, India.

08:00 EDT 13th May 2019 | BioPortfolio

Summary of "Functional characterization of a major compatible solute in Deep Sea halophilic eubacteria of active volcanic Barren Island, Andaman and Nicobar Islands, India."

Ectoine, a cyclic tetrahydropyrimidine (2-methyl-1,4,5,6-tetrahydropyrimidine-4-carboxylic acid) is a compatible solute, serves as a protective compound in many halophilic eubacterial cells under stress. In this study, the ectoine biosynthesis genes (ectA, B and C) from the genomic DNA of a deep sea eubacteria, Bacillus clausii NIOT-DSB04 was PCR amplified, cloned into the expression vector pQE30 with a 6 × histidine tag and expressed in M15 cells. The lysates of induced cells with diaminobutyric acid aminotransferase and ectoine synthase disclosed two clear expressed bands with molecular masses of 46 kDa and 15 kDa as estimated by SDS-PAGE. The recombinant ectoine synthase activity of the expressed cells was at higher level than that of uninduced cells. In silico sequence and phylogenetic analysis of nucleotides and amino acids revealed that the ectA, B and C sequences of Bacillus clausii NIOT-DSB04 were conserved in many eubacteria.

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Name: Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases
ISSN: 1567-7257
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