L-硒甲硫胺酸,或稱甲硒胺酸、硒蛋胺酸(英語:selenomethionine),即L-硒代蛋胺酸,是重要的有机硒源之一。在自然界中,硒元素以硒代胺基酸形式有机存在于粮食中,也是有机硒在硒酵母中存在的主要形式。[1]
合成蛋白过程中,部分蛋胺酸由硒蛋胺酸替代,成为哺乳动物贮存有机硒的仓库。在硒需求量旺盛时期,可以可逆地释放传递到需要硒的部位或参与新一轮硒蛋白合成。[2]
註釋
- ^ P. D. Whanger, Selenocompounds in plants and animals and their biological significance, Journal of the American College of Nutrition, 21(3), 223–232 (2002).
- ^
E. Block, M. Birringer, W. Jiang, T. Nakahodo, H.J. Thompson, P.J. Toscano, H. Uzar, X. Zhang, and Z. Zhu, Allium chemistry: synthesis, natural occurrence, biological activity, and chemistry of Se-alk(en)ylselenocysteines and their
γ-glutamyl derivatives and oxidation products, J. Agric. Food Chem., 49, 458-470 (2001).
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外部連結