What is Selenocysteine?
'''Selenocysteine''' <ref>abbreviated as Sec or U; and in older publications as Se-Cys</ref> is the 21st [[protein]]-building [[amino acid]].<ref>Stadtman, Therese 1974. Selenium biochemistry. ''Science''. '''183''' (4128): 915–22. [http://science.sciencemag.org/content/183/4128/915] {{Webarchive|url=https://web.archive.org/web/20161222203556/http://science.sciencemag.org/content/183/4128/915 |date=2016-12-22 }}</ref> It is almost the same as [[cysteine]], but a [[selenium]] atom replaces the [[sulfur]] atom. == References == {{reflist}} {{-}} {{chemistry-stub}} {{Proteinogenic amino acids}} [[Category:Amino acids]]