Data | Translate/Untranslate
This command is available only if the data contain protein-coding nucleotide sequences. It automatically extracts all protein-coding domains for translation and displays the corresponding protein sequence. If the translated sequence is already displayed, then issuing this command displays the original nucleotide sequences, including all coding and non-coding regions. Depending on the data displayed (translated or nucleotide), relevant menu options in the Sequence Data Explorer are enabled. However, translated and un-translated status does not have any impact on the analytical options available in MEGA (e.g., Distances or Phylogeny menus), as MEGA provides all possible options for your dataset at all times.