大鼠 Txnrd2 (NM_022584) cDNA克隆

This gene product belongs to the family of pyridine nucleotide-disulfide oxidoreductases. It is a mitochondrial enzyme that catalyzes the reduction of thioredoxin, and is implicated in the defense against oxidative stress. This protein contains a selenocysteine (Sec) residue at its active site. The selenocysteine is encoded by the UGA codon, which normally signals translation termination. The 3' UTR of Sec-containing genes have a common stem-loop structure, the sec insertion sequence (SECIS), which is necessary for the recognition of UGA as a Sec codon rather than as a stop signal. [provided by RefSeq, Jul 2008]