Introduce heterologous genes into database
I have a number of heterologous genes I would like to include in a private genome database, so that can include in pathway annotations (for pathway engineering). As there is not necessarily a specific chromosomal location to place them (could be arbitrary I suppose at beginning or end of genome) what would be a recommendation on how to handle this. Right now I can enter a new gene or protein but the associated sequence I figure can only go in the comment.
Maybe this is already straightforward but I can't seem to find a way without crashing program looking for a location to insert gene.