Abstract
Objective
To obtain active lipases for biodiesel production by refolding Proteus sp. lipase inclusion bodies expressed in E. coli.
Results
A lipase gene lipPN1 was cloned from Proteus sp. NH 2-2 and expressed in E. coli BL21(DE3). Non-reducing SDS-PAGE revealed that recombinant LipPN1(rLipPN1) were prone to form inclusion bodies as disulfide-linked dimers in E. coli. Site-directed mutagenesis confirmed that Cys85 in LipPN1 was involved in the dimer formation. After optimizing the inclusion body refolding conditions, the maximum lipase activity reached 1662 U/L. The refolded rLipPN1 exhibited highest activity toward p-nitrophenyl butyrate at pH 9.0 and 40 °C. It could be activated by Ca2+ with moderate tolerance to organic solvents. It could also convert soybean oil into biodiesel at a conversion ratio of 91.5%.
Conclusion
Preventing the formation of disulfide bond could enhance the refolding efficiency of rLipPN1 inclusion bodies.
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References
Alnoch RC, Stefanello AA, Martini VP, Richter JL (2018) Co-expression, purification and characterization of the lipase and foldase of Burkholderia contaminans LTEB11. Int J Biol Macromol 116:1222–1231
Gao B, Su E, Lin J, Jiang Z, Ma Y, Wei D (2009) Development of recombinant Eshcerichia coli whole-cell biocatalyst expressing a novel alkaline lipase-coding gene from Proteus sp. for biodiesel production. J Biotechnol 139:169–175
Gupta S, Scott D, Prabha CR, Ashokkumar M (2017) Biodiesel synthesis assisted by ultrasonication using engineered thermo-stable Proteus vulgaris lipase. Fuel 208:430–438
Korman TP, Bowie JU (2012) Crystal structure of Proteus mirabilis lipase, a novel lipase from the Proteus/Psychrophilic subfamily of lipase family I.1. PLoS ONE 7:e52890
Korman TP, Sahachartsiri B, Charbonneau DM, Huang GL, Beauregard M, Bowie JU (2013) Dieselzymes: development of a stable and methanol tolerant lipase for biodiesel production by directed evolution. Biotech For Biofuels 6:70
Li S, Pang H, Lin K, Xu J, Zhao J, Fan L (2011a) Refolding, purification and characterization of an organic solvent-tolerant lipase from Serratia marcescens ECU1010. J Mol Catal B-Enzym 71:171–176
Li S, Zhang L, Wu Q, Xin A, Zhao J, Fan L (2011b) Increasing the refolding efficiency in vitro by site-directed mutagenesis of Cys383 in rat procarboxypeptidase B. Enzyme Microb Tech 49:139–145
Li K, Fan Y, He Y, Zeng L, Han X, Yan Y (2017) Burkholderia cepacia lipase immobilized on heterofunctional magnetic nanoparticles and its application in biodiesel synthesis. Sci Rep 7:16473
Lu Y, Lin Q, Wang J, Wu Y, Bao W, Lv F, Lu Z (2010) Overexpression and characterization in Bacillus subtilis of a positionally nonspecific lipase from Proteus vulgaris. J Ind Microbiol Biot 37:919–925
Natalia A, Kristiani L, Kim HK (2014) Characterization of Proteus vulgaris K80 lipase immobilized on amine-terminated magnetic micropariticles. J Microbiol Biotechnol 24:1382–1388
Peciak K, Tommasi R, Choi J, Brocchini S, Laurine E (2014) Expression of soluble and active interferon consensus in SUMO fusion expression system in E. coli. Protein Expres Purif 99:18–26
Quaas B, Burmeister L, Li Z, Nimtz M, Hoffmann A, Rinas U (2018) Properties of dimeric, disulfide-linked rhBMP-2 recovered from E. coli derived inclusion bodies by mild extraction or chaotropic solubilization and subsequent refolding. Process Biochem 67:80–87
Shao H, Xu L, Yan Y (2013) Isolation and characterization of a thermostable esterase from a metagenomic library. J Ind Microbiol Biot 40:1211–1222
Whangsuk W, Sungkeeree P, Thiengmag S, Kerdwong J, Sallabhan R, Mongkolsuk S, Loprasert S (2013) Gene cloning and characterization of a novel highly organic solvent tolerant lipase from Proteus sp. SW1 and its application for biodiesel production. Mol Biotechnol 53:55–62
Yang W, He Y, Xu L, Zhang H, Yan Y (2016) A new extracellular thermo-solvent-stable lipase from Burkholderia ubonensis SL-4: identification, characterization and application for biodiesel production. J Mol Catal B-Enzym 126:76–89
Acknowledgements
The authors acknowledge the financial support of the National Natural Science Foundation of P. R. China (NSFC No. 31501420 and No. 31500442) and the Doctoral Scientific Research Foundation of Zhengzhou University of Light Industry (No. 13501050027).
Supporting information
Supplementary Table 1–Primers used in this study
Supplementary Fig. 1–A lipase-producing strain isolated from a sediment sample collected from the South China Sea
Supplementary Fig. 2–a Effect of temperature on rLipPN1 expression; b Effect of the concentration of IPTG on rLipPN1 expression
Supplementary Fig. 3–a The refolding of rLipPN1 inclusion bodies in different buffers; b The refolding of rLipPN1_C85S inclusion bodies in different buffers
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Shao, H., Hu, X., Sun, L. et al. Gene cloning, expression in E. coli, and in vitro refolding of a lipase from Proteus sp. NH 2-2 and its application for biodiesel production. Biotechnol Lett 41, 159–169 (2019). https://doi.org/10.1007/s10529-018-2625-1
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DOI: https://doi.org/10.1007/s10529-018-2625-1