You might find the coding for selenocysteine interesting: https://en.wikipedia.org/wiki/SECIS_element https://en.wikipedia.org/wiki/SECIS_element tl;dr: seleno

You might find the coding for selenocysteine interesting: https://en.wikipedia.org/wiki/SECIS_element https://en.wikipedia.org/wiki/SECIS_element tl;dr: selenocysteine doesn't have a normal coding as a base triple, but as re-interpretation of a stop codon due to the information stored _after_ that stop codon that makes an RNA stick to itself during translation.