Entrez Summary: The protein encoded by this gene belongs to the pyridine nucleotide-disulfide oxidoreductase family, and is a member of the thioredoxin (Trx) system. Three thioredoxin reductase (TrxR) isozymes are found in mammals. TrxRs are selenocysteine-containing flavoenzymes, which reduce thioredoxins, as well as other substrates, and play a key role in redox homoeostasis. This gene encodes a mitochondrial form important for scavenging reactive oxygen species in mitochondria. It functions as a homodimer containing FAD, and selenocysteine (Sec) at the active site. Sec is encoded by UGA codon that normally signals translation termination. The 3' UTRs of selenoprotein mRNAs contain a conserved stem-loop structure, the Sec insertion sequence (SECIS) element, which is necessary for the recognition of UGA as a Sec codon rather than as a stop signal. Alternatively spliced transcript variants encoding different isoforms, including a few localized in the cytosol and some lacking the C-terminal Sec residue, have been found for this gene. [provided by RefSeq, Jun 2017].
UniProt Summary: N/A
Pfam DomainsGO Terms
Pfam Domains
FAD binding 2
Pyr redox dim
FAD oxidored
Pyr redox 2
Pyr redox
GO Terms
thioredoxin-disulfide reductase activity
response to oxygen radical
flavin adenine dinucleotide binding
cell redox homeostasis
electron transfer activity
cellular oxidant detoxification
cellular detoxification
detoxification
electron transport chain
response to reactive oxygen species
cellular response to toxic substance
cellular response to oxidative stress
mitochondrial matrix
response to oxidative stress
generation of precursor metabolites and energy
response to toxic substance
response to inorganic substance
cellular homeostasis
oxidation-reduction process
mitochondrion
response to oxygen-containing compound
homeostatic process
cellular response to stress
CRISPR Data
Compound HitMost Correlated Genes in ChemogenomicsTissues where Essential in the Avana Dataset (DepMap 20Q1)