Instruksjon til oppgaven Selenium is in the oxygen series of the periodic table, along with S, and can replace S in the amino acids cysteine and methionine.Choose from one to all of the alternativesCysteine and methionine are modified to form selenocysteine and selenomethionine after they have been incorporated into proteins.In plants, selenium is mostly found in selenomethionine, while in animal proteins, selenocysteine is more common.UGA in RNA normally codes for cysteine, but in genes for selenoproteins it codes for selenocysteine.An mRNA coding for a selenoprotein has a special stem-loop structure in the 3’ untranslated region that instructs the ribosome to incorporate selenocysteine.Metallothionein is a selenoprotein.Send svaretReset quiz