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Lipases are industrial enzymes that catalyze both triglyceride hydrolysis and ester synthesis. The overexpression of lipase genes is considered one of the best approaches to increase the enzymatic production for industrial applications. Subfamily I.2. lipases require a chaperone or foldase in order to become a fully-activated enzyme. The goal of this research was to isolate, clone, and co-express genes that encode lipase and foldase from Burkholderia territorii GP3, a lipolytic bacterial isolate obtained from Mount Papandayan soil via growth on Soil Extract Rhodamine Agar. Genes that encode for lipase (lipBT) and foldase (lifBT) were successfully cloned from this isolate and co-expressed in the E. coli BL21 background. The highest expression was shown in E. coli BL21 (DE3) pLysS, using pET15b expression vector. LipBT was particulary unique as it showed highest activity with optimum temperature of 80°C at pH 11.0. The optimum substrate for enzyme activity was C 10 , which is highly stable in methanol solvent. The enzyme was strongly activated by Ca 2+ , Mg 2+ , and strongly inhibited by Fe 2+ and Zn 2+ . In addition, the enzyme was stable and compatible in non-ionic surfactant, and was strongly incompatible in ionic surfactant.

Isolation, Cloning and Co-Expression of Lipase and Foldase Genes of Burkholderia territorii GP3 from Mount Papandayan Soil