We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleLow Exchangeability of Selenocysteine, the 21st Amino Acid, in Vertebrate Proteins.AuthorsCastellano, Sergi; Andrés, Aida M.; Bosch, Elena; Bayes, Mònica; Guigó, Roderic; Clark, Andrew G.PublicationMolecular Biology & Evolution, 2009, Vol 26, Issue 9, p2031ISSN0737-4038Publication typearticleDOI10.1093/molbev/msp109