Abstract
Objectives
A 2′,3′-cyclic phosphodiesterase gene (drCPDase) has been characterized from Deinococcus radiodurans and is involved in the robust resistance of this organism.
Results
Cells lacking 2′,3′-cyclic phosphodiesterase gene (drCPDase) showed modest growth defects and displayed increased sensitivities to high doses of various DNA-damaging agents including ionizing radiation, mitomycin C, UV and H2O2. The transcriptional level of drCPDase increased after H2O2 treatment. Additional nucleotide monophosphate partially recovered the phenotype of drCPDase knockout cells. Complementation of E. coli with drCPDase resulted in enhanced H2O2 resistance.
Conclusions
The 2′,3′-cyclic phosphodiesterase (drCPDase) contributes to the extreme resistance of D. radiodurans and is presumably involved in damaged nucleotide detoxification.
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Acknowledgements
This work was supported by the Zhejiang Provincial Natural Science Foundation for Outstanding Young Scientists (LR16C050002) and grants from the National Natural Science Foundation of China (31670819, 31670065).
Supporting information
Supplementary Table 1—Bacterial strains and plasmids.
Supplementary Table 2—Primers used for cloning and real time PCR.
Supplementary Fig. 1—Sequence alignments of the CPDase family proteins.
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Han, W., Zhou, C., Cheng, J. et al. Characterization and role of a 2′,3′-cyclic phosphodiesterase from Deinococcus radiodurans . Biotechnol Lett 39, 1211–1217 (2017). https://doi.org/10.1007/s10529-017-2349-7
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DOI: https://doi.org/10.1007/s10529-017-2349-7