Selenodicysteine is the 21st proteinogenic amino acid. Selenocysteine exists naturally in all three domains of life, but not in every lineage, as a building block of selenoproteins. Selenocysteine is a cysteine analogue with a selenium-containing selenol group in place of the sulfur-containing thiol group. Selenocysteine is present in several enzymes (for example glutathione peroxidases, tetraiodothyronine 5' deiodinases, thioredoxin reductases, formate dehydrogenases, glycine reductases, selenophosphate synthetase 2, methionine-R-sulfoxide reductase B1 (SEPX1), and some hydrogenases). References: Tobe T, Ueda K, Aoki A, Okamoto Y, Kojima N, Jinno H. Selenium uptake through cystine transporter mediated by glutathione conjugation. J Toxicol Sci. 2017;42(1):85-91. doi: 10.2131/jts.42.85. PubMed PMID: 28070112.

纯度：≥98%

CAS：20710-99-0