Homocysteine (Hcy) is a thiol-containing amino acid produced by the intracellular demethylation of methionine.Approximately 80% of circulating Hcy in the blood is protein bound by disulfide linkage.The remaining unbou...Homocysteine (Hcy) is a thiol-containing amino acid produced by the intracellular demethylation of methionine.Approximately 80% of circulating Hcy in the blood is protein bound by disulfide linkage.The remaining unbound Hcy combines by oxidation either with itself to form the dimer homocystine or with cysteine to form the mixed disulfide cysteine-Hcy.展开更多
文摘Homocysteine (Hcy) is a thiol-containing amino acid produced by the intracellular demethylation of methionine.Approximately 80% of circulating Hcy in the blood is protein bound by disulfide linkage.The remaining unbound Hcy combines by oxidation either with itself to form the dimer homocystine or with cysteine to form the mixed disulfide cysteine-Hcy.