【摘要】 谷胱甘肽过氧化物酶、甲状腺素５′脱碘酶等多种含硒酶的作用机制已研究得较为详细．缺硒是克山病发病的直接因素．体内适当的硒含量具有抑癌功能．硒蛋白中硒参入到蛋白分子是通过硒半胱氨酸－ｔＲＮＡ 识别ｍ ＲＮＡ 中特导的ＵＧＡ 密码子将硒半胱氨酸插入到硒蛋白中的更多还原

【Abstract】 The catalysis mechanism of sereral kinds of seleniferous enzymes is studied more detailed,such as GSH\|Px,T45 ′\|D etc.Seleniumlacking is the immediat factor which leads keshan dicease to come on. A proper quantity of Selenium in human body can show carcinostasis.In all these selenoproteins Se is incorporatde into the protein molecule via the selenocysteiny1\|tRNA which recognizes the specific UGA codons in mRNA to insert selenocysteine into the primary structure of selenoproteins.更多还原