The mRNA also contains regions that are not translated: in eukaryotes, the 5'untranslated region, 3' untranslated region, cap and polyA tail.
The mRNA also contains regions. These regions are not translated: in eukaryotes. Eukaryotes are the 5'untranslated region. Eukaryotes are 3' untranslated region. Eukaryotes are cap. Eukaryotes are polyA tail.