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Genome‐wide analysis and transcriptional regulation of the typical and atypical thioredoxins in Arabidopsis thaliana
Author(s) -
Chibani Kamel,
Pucker Boas,
Dietz KarlJosef,
Cavanagh Amanda
Publication year - 2021
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1002/1873-3468.14197
Subject(s) - thioredoxin , arabidopsis thaliana , gene , biology , genome , arabidopsis , in silico , genetics , transcriptional regulation , microbiology and biotechnology , computational biology , transcription factor , mutant
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.