期刊
FEBS LETTERS
卷 595, 期 21, 页码 2715-2730出版社
WILEY
DOI: 10.1002/1873-3468.14197
关键词
Arabidopsis; molecular evolution; oxidoreductase; regulation; thioredoxins
资金
- Bielefeld University [DI 346]
- DFG
A comprehensive analysis of TRXs in the Arabidopsis thaliana genome revealed a high number of atypical TRXs, indicating potential special functions in plants. The identification of TRX-c, an atypical class of thioredoxins, in photosynthetic eukaryotes suggests unique roles in chloroplasts and specific motifs in active sites. Transcriptional regulation analysis showed high expression of TRX-c in leaves and strong regulation under various stresses.
Thioredoxins (TRXs), a large subclass of ubiquitous oxidoreductases, are involved in thiol redox regulation. Here, we performed a comprehensive analysis of TRXs in the Arabidopsis thaliana genome, revealing 41 genes encoding 18 typical and 23 atypical TRXs, and 6 genes encoding thioredoxin reductases (TRs). The high number of atypical TRXs indicates special functions in plants that mostly await elucidation. We identified an atypical class of thioredoxins called TRX-c in the genomes of photosynthetic eukaryotes. Localized to the chloroplast, TRX-c displays atypical CPLC, CHLC and CNLC motifs in the active sites. In silico analysis of the transcriptional regulations of TRXs revealed high expression of TRX-c in leaves and strong regulation under cold, osmotic, salinity and metal ion stresses.
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