Current Genetics

, Volume 61, Issue 1, pp 73–86 | Cite as

Overexpression of Pa_1_10620 encoding a mitochondrial Podospora anserina protein with homology to superoxide dismutases and ribosomal proteins leads to lifespan extension

  • Carolin Grimm
  • Lena Böhl
  • Heinz D. OsiewaczEmail author
Research Article


In biological systems, reactive oxygen species (ROS) represent ‘double edged swords’: as signaling molecules they are essential for proper development, as reactive agents they cause molecular damage and adverse effects like degeneration and aging. A well-coordinated control of ROS is therefore of key importance. Superoxide dismutases (SODs) are enzymes active in the detoxification of superoxide. The number of isoforms of these proteins varies among species. Here we report the characterization of the putative protein encoded by Pa_1_10620 that has been previously annotated to code for a mitochondrial ribosomal protein but shares also sequence domains with SODs. We report that the gene is transcribed in P. anserina cultures of all ages and that the encoded protein localizes to mitochondria. In strains overexpressing Pa_1_10620 in a genetic background in which PaSod3, the mitochondrial MnSOD of P. anserina, is deleted, no SOD activity could be identified in isolated mitochondria. However, overexpression of the gene leads to lifespan extension suggesting a pro-survival function of the protein in P. anserina.


Superoxide dismutase MnSOD Podospora anserina Aging Mitochondrial ribosomes 



We thank the Deutsche Forschungsgemeinschaft (Bonn, Germany) for generous support of this study to HDO (Os75/13-1).


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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Faculty for Biosciences and Cluster of Excellence Frankfurt ‘Macromolecular Complexes’, Institute of Molecular BiosciencesJohann Wolfgang Goethe UniversityFrankfurtGermany

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