at the moment it is not possible to use a shortcut.
However, you can make use of the cleanup operations to add a protect terms formatter for some/all entry fields.
So, if you run a cleanup operation, and you have the word DNA in your protected terms list, it would now for all entries in your library add the braces around the terms,
And you can manage (import/export) the list with protected terms under Options-> Manage protected terms.
The list itself is just a text file with each term in a new line.