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txnrd2 thioredoxin reductase 2 [ Xenopus tropicalis (tropical clawed frog) ]

Gene ID: 100145605, updated on 6-Jul-2026
Official Symbol
txnrd2provided by Xenbase
Official Full Name
thioredoxin reductase 2provided by Xenbase
Primary source
Xenbase:XB-GENE-5767949
See related
Ensembl:ENSXETG00000006307 AllianceGenome:Xenbase:XB-GENE-5767949
Gene type
protein coding
RefSeq status
REVIEWED
Organism
Xenopus tropicalis
Lineage
Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Amphibia; Batrachia; Anura; Pipoidea; Pipidae; Xenopodinae; Xenopus; Silurana
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. [provided by RefSeq, Jun 2017]
Orthologs
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See txnrd2 in Genome Data Viewer
Location:
chromosome: 1
Exon count:
18
Annotation release Status Assembly Chr Location
104 current UCB_Xtro_10.0 (GCF_000004195.4) 1 NC_030677.2 (154784388..154845348, complement)
103 previous assembly Xenopus_tropicalis_v9.1 (GCF_000004195.3) 1 NC_030677.1 (146296380..146354901, complement)

Chromosome 1 - NC_030677.2Genomic Context describing neighboring genes Neighboring gene T-box 1 Neighboring gene guanine nucleotide binding protein (G protein), beta polypeptide 1-like Neighboring gene catechol-O-methyltransferase Neighboring gene catechol-O-methyltransferase gene 2

Gene Ontology Provided by Xenbase

Function Evidence Code Pubs
enables flavin adenine dinucleotide binding IBA
Inferred from Biological aspect of Ancestor
more info
 
enables flavin adenine dinucleotide binding IEA
Inferred from Electronic Annotation
more info
 
enables glutathione-disulfide reductase (NADPH) activity IBA
Inferred from Biological aspect of Ancestor
more info
 
enables oxidoreductase activity IEA
Inferred from Electronic Annotation
more info
 
enables oxidoreductase activity, acting on a sulfur group of donors, NAD(P) as acceptor IEA
Inferred from Electronic Annotation
more info
 
enables thioredoxin-disulfide reductase (NADPH) activity IEA
Inferred from Electronic Annotation
more info
 
Process Evidence Code Pubs
involved_in cell redox homeostasis IBA
Inferred from Biological aspect of Ancestor
more info
 
involved_in cell redox homeostasis IEA
Inferred from Electronic Annotation
more info
 
involved_in cellular oxidant detoxification IEA
Inferred from Electronic Annotation
more info
 
involved_in cellular response to oxidative stress IBA
Inferred from Biological aspect of Ancestor
more info
 
involved_in glutathione metabolic process IBA
Inferred from Biological aspect of Ancestor
more info
 
involved_in response to oxidative stress IEA
Inferred from Electronic Annotation
more info
 
Component Evidence Code Pubs
is_active_in cytosol IBA
Inferred from Biological aspect of Ancestor
more info
 
is_active_in mitochondrion IBA
Inferred from Biological aspect of Ancestor
more info
 
Preferred Names
thioredoxin reductase 2, mitochondrial
NP_001120487.2

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RefSeqs maintained independently of Annotated Genomes

These reference sequences exist independently of genome builds. Explain

These reference sequences are curated independently of the genome annotation cycle, so their versions may not match the RefSeq versions in the current genome build. Identify version mismatches by comparing the version of the RefSeq in this section to the one reported in Genomic regions, transcripts, and products above.

mRNA and Protein(s)

  1. NM_001127015.2NP_001120487.2  thioredoxin reductase 2, mitochondrial

    Status: REVIEWED

    Source sequence(s)
    BC161360, DN075312, DN075313
    UniProtKB/TrEMBL
    A0A8J0QA84, B1H3E0, F6TTV0
    Related
    ENSXETP00000013826.5, ENSXETT00000013826.5
    Conserved Domains (1) summary
    cl27343
    Location:18504
    Pyr_redox_dim; Pyridine nucleotide-disulphide oxidoreductase, dimerisation domain

RefSeqs of Annotated Genomes: Xenopus tropicalis Annotation Release 104 details...Open this link in a new tab

The following sections contain reference sequences that belong to a specific genome build. Explain

Reference UCB_Xtro_10.0 Primary Assembly

Genomic

  1. NC_030677.2 Reference UCB_Xtro_10.0 Primary Assembly

    Range
    154784388..154845348 complement
    Download
    GenBank, FASTA, Sequence Viewer (Graphics)