> find Sequence DNA=*tgcggctgag*
> doesn't find anything, so I must be barking up the wrong tree.
this looks for a sequence whose _name_ contains tgcggctgag, so your
assumption is right.
Perhaps in future ACEDB could treat the DNA class like LongText and
search DNA, too, when clicking on the "Long Search" button in the main
For the time being you can e.g. click on class DNA in the main window,
then in the main KeySet choose "Ace dump" from the menu, then use
emacs or whatever unix tool on the resulting .ace file.