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Global analysis of non-animal peroxidases provides insights into the evolution of this gene family in the green lineage.
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- Author(s): Mbadinga, Duchesse Lacour Mbadinga; Li, Qiang; Ranocha, Philippe; Martinez, Yves; Dunand, Christophe
- Source:
Journal of Experimental Botany; 6/11/2020, Vol. 71 Issue 11, p3350-3360, 11p- Subject Terms:
- Source:
- Additional Information
- Abstract: The non-animal peroxidases belong to a superfamily of oxidoreductases that reduce hydrogen peroxide and oxidize numerous substrates. Since their initial characterization in 1992, a number of studies have provided an understanding of the origin and evolution of this protein family. Here, we report a comprehensive evolutionary analysis of non-animal peroxidases using integrated in silico and biochemical approaches. Thanks to the availability of numerous genomic sequences from more than 2500 species belonging to 14 kingdoms together with expert and comprehensive annotation of peroxidase sequences that have been centralized in a dedicated database, we have been able to use phylogenetic reconstructions to increase our understanding of the evolutionary processes underlying the diversification of non-animal peroxidases. We analysed the distribution of all non-animal peroxidases in more than 200 eukaryotic organisms in silico. First, we show that the presence or absence of non-animal peroxidases correlates with the presence or absence of certain organelles or with specific biological processes. Examination of almost 2000 organisms determined that ascorbate peroxidases (APxs) and cytochrome c peroxidases (CcPs) are present in those containing chloroplasts and mitochondria, respectively. Plants, which contain both organelles, are an exception and contain only APxs without CcP. Class II peroxidases (CII Prxs) are only found in fungi with wood-decay and plant-degradation abilities. Class III peroxidases (CIII Prxs) are only found in streptophyte algae and land plants, and have been subjected to large family expansion. Biochemical activities of APx, CcP, and CIII Prx assessed using protein extracts from 30 different eukaryotic organisms support the distribution of the sequences resulting from our in silico analysis. The biochemical results confirmed both the presence and classification of the non-animal peroxidase encoding sequences. [ABSTRACT FROM AUTHOR]
- Abstract: Copyright of Journal of Experimental Botany is the property of Oxford University Press / USA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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