LongevityMap Gene

Gene details

HGNC symbol: TXNRD1
Aliases: TR; TR1; TXNR; TRXR1; GRIM-12
Common name: thioredoxin reductase 1
Description: This gene encodes a member of the family of pyridine nucleotide oxidoreductases. This protein reduces thioredoxins as well as other substrates, and plays a role in selenium metabolism and protection against oxidative stress. The functional enzyme is thought to be a homodimer which uses FAD as a cofactor. Each subunit contains a selenocysteine (Sec) residue which is required for catalytic activity. The selenocysteine is encoded by the UGA codon that normally signals translation termination. The 3' UTR of selenocysteine-containing genes have a common stem-loop structure, the sec insertion sequence (SECIS), that is necessary for the recognition of UGA as a Sec codon rather than as a stop signal. Alternative splicing results in several transcript variants encoding the same or different isoforms. [provided by RefSeq, Jul 2008]
Cytogenetic Location: 12q23.3
UCSC Genome Browser: View 12q23.3 on the UCSC genome browser
OMIM: 601112
Ensembl: ENSG00000198431
UniProt/Swiss-Prot: B7Z2S5_HUMAN
Entrez Gene: 7296
UniGene: 654922
1000 Genomes: 1000 Genomes

Significant/Non-significant: 2/0

Longevity Association: Significant
Population: Danish
Study Design: Alleles in candidate pathways (GH/IGF1 signaling, DNA damage signaling and repair and pro/antioxidants) were investigated for association with longevity in 1089 oldest-old (age 92-93) and 736 middle-aged Danes
Conclusions: Six SNPs (in TNXRD1, XDH, GHRL, MLH1, H2AFX, XRCC5) were associated with mortality in late life after correction for multiple hypothesis testing. No replications were observed in German and Dutch populations.
Indentifier

Longevity Association: Significant
Population: Danish
Study Design: 38 genes (311 SNPs) belonging to pro-antioxidant pathways were investigated for the association with physical and cognitive performances in a Cohort of 1089 Danish nonagenarians. For each gene analyzed in the pro-antioxidant pathway, the influence on longitudinal survival was tested.
Conclusions: NDUFS1, TXNRD1, SOD2 and UCP3 were found significantly associated with lifespan in the female cohort. This result is consistent with their associations with physical functioning and suggests that the variability of genes in the pro-antioxidant pathway can influence survival through an effect on physical performances, at least in the analyzed cohort.
Indentifier