Abstract
The enzymes are biological macromolecules that biocatalyze certain biochemical reactions without undergoing any modification or degradation at the end of the reaction. In this work, we constructed a recombinant novel Raoultella sp. NX-TZ-3-15 strain that produces heparinase with a maltose binding tag to enhance its production and activity. Additionally, MBP–heparinase was purified and its enzymatic capabilities are investigated to determine its industrial application. Moreover, the recombinant plasmid encoding the MBP–heparinase fusion protein was effectively generated and purified to a high purity. According to SDS-PAGE analysis, the MBP–heparinase has a molecular weight of around 70 kDa and the majority of it being soluble with a maximum activity of 5386 U/L. It has also been noted that the three ions of Ca2 + , Co2 + , and Mg2 + can have an effect on heparinase activities, with Mg2 + being the most noticeable, increasing by about 85%, while Cu2 + , Fe2 + , Zn2 + having an inhibitory effect on heparinase activities. Further investigations on the mechanistic action, structural features, and genomes of Raoultella sp. NX-TZ-3-15 heparinase synthesis are required for industrial-scale manufacturing.
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Funding
This work was supported by the National Key R&D Program of China (2021YFA0910800), the Natural Science Foundation of Guangdong Province (Grant No. 2022A1515012043), and the Special Funds for Development of Strategic Emerging Industries in Shenzhen (JCYJ20190808145613154, KQJSCX20180328100801771), and Shenzhen Science and Technology Program (ZDSYS20210623100800001).
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YL Conceptualization, methodology, software. YL Conceptualization, methodology, software. YJ Visualization, investigation. MSRR Software, validation, writing—original draft preparation. HMM: Data curation, writing—original draft preparation. MU: Software and original draft preparation. LZ: Software, validation, Supervision. All authors have read and agreed to the published version of the manuscript.
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Li, Y., Lin, Y., Jiang, Y. et al. Expression and characterization of heparinase II with MBP tag from a novel strain, Raoultella NX-TZ-3-15. Arch Microbiol 204, 551 (2022). https://doi.org/10.1007/s00203-022-03158-4
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DOI: https://doi.org/10.1007/s00203-022-03158-4