KnowraSelenocysteineLinked fromLinked fromThe 7 pages that link to Selenocysteine, each with the reason it gives.All 7Broader topic 3Related 1Compared with 3Amino acidBroader topic: It is a rare exception to the usual set of 20 standard amino acids.Genetic codeBroader topic: It demonstrates that a stop codon can specify an amino acid in a defined context.Proteinogenic amino acidBroader topic: It is a specialized proteinogenic amino acid beyond the canonical set of 20.