Synthesis of Mycoplasma arginine deiminase in E. coli using stress-responsive proteins

Keum Young Ahn, Boram Lee, Kyung Yeon Han, Jong Am Song, Doo Sung Lee, Jeewon Lee

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


We found Escherichia coli proteins, elongation factor Ts (Tsf), and malate dehydrogenase (Mdh) that can exist in the form of native and soluble proteins even under stress situation such as heat shock and protein denaturing condition. To examine their property as solubility enhancers, aggregation-prone Mycoplasma arginine deiminase (mADI), which has been suggested as anti-cancer agent, was fused to the C-terminal of each of them and cloned into pET28a to be expressed in the E. coli cytoplasm. When mADI was fused to fusion partners (Mdh, Tsf), a significant portion of the recombinant mADI was expressed in a soluble fraction (>90%) whereas the directly expressed mADI was aggregated to the inclusion body. In addition, recombinant mADI released from the fusion tag retained its soluble form and presented its specific enzymatic activity of converting l-arginine into citrulline (>10. U/mg). These results show that Tsf and Mdh could serve as effective solubility enhancers for aggregation-prone proteins (e.g. mADI in this case) when used as fusion expression partners in bacterial expression systems.

Original languageEnglish
Pages (from-to)46-49
Number of pages4
JournalEnzyme and Microbial Technology
Publication statusPublished - 2014 Sept

Bibliographical note

Funding Information:
This study was supported by the 2012 NLRL (National Leading Research Lab.) Project (grant no. 2012R1A2A1A01008085 ) (the main project that supported this work) and the National Research Foundation of Korea (NRF) grant (no. 2010-0027955 ) funded the Korea governmant (MSIP) . We also appreciate the kind donation of cDNA clone of Mycoplasma arginine deiminase from Prof. Bon Hong Min (College of Medicine, Korea University).


  • Mycoplasma arginine deiminase
  • Solubility enhancer
  • Stress-responsive protein

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Biochemistry
  • Applied Microbiology and Biotechnology


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