Skip to main content

Advertisement

Log in

An EDTA-resistant pyrazinamidase from non-pathogen Pseudonocardia carboxydivorans

  • Original Research Paper
  • Published:
Biotechnology Letters Aims and scope Submit manuscript

Abstract

Objectives

To characterize a pyrazinamidase from non-pathogen Pseudonocardia carboxydivorans.

Results

A pyrazinamidase gene pncA encoding a 23-kDa protein PncA-Pse from P. carboxydivorans was over-expressed in Escherichia coli and characterized. This PncA-Pse can convert both pyrazinamide and nicotinamide efficiently with the optimal pH and temperature of pH 8.5 and 45 °C, respectively. Although ferrous iron and manganese were detected in PncA-Pse, the enzymatic activity is not affected by EDTA with the final concentration of 10 mM. Moreover, the enzymatic activity was not significantly affected with the addition of several metal ions, respectively. Based on the structure modeling, the 61st histidine which is associated with the metal binding, was mutated into alanine to get mutant H61A. No activity, iron and manganese were detected for H61A, which implies that PncA-Pse is a metal enzyme with resistance of the metal ion chelator EDTA, which is different from the previous reports.

Conclusion

This is the first characterized pyrazinamidase from the genus Pseudonocardia, a non-pathogen.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Fig. 1
Fig. 2
Fig. 3
Fig. 4

Similar content being viewed by others

References

Download references

Acknowledgements

This study was supported by National Key R&D Program of China (Grant No. 2018YFA090091-02) and 2016 Wuhan Yellow Crane Talents (Science) Program.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Guimin Zhang.

Ethics declarations

Conflict of interest

The authors declare that they have no conflict of interest.

Additional information

Publisher's Note

Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.

Rights and permissions

Reprints and permissions

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Yan, C., Zhang, J., Wu, P. et al. An EDTA-resistant pyrazinamidase from non-pathogen Pseudonocardia carboxydivorans. Biotechnol Lett 42, 1707–1718 (2020). https://doi.org/10.1007/s10529-020-02890-5

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10529-020-02890-5

Keywords

Navigation