Okay for those interested.

1. AI was trained chatgpt-style, but instead of letters were amino-acids, instead of words genes, instead of sentences, proteins.
2. Just like with text-processing AIs, the proteins created by this AI were like proteins AI has "seen" before. AI changed some "words", but did it in a way that proteins still worked, and folded similarly to existing ones. Which is an impressive feat, and also fun thing that trying to put the words in sentence so they would make sense and putting aminos in the chain so they would made sense were very similar processes
3. Some (but not all) of proteins created actually worked to kill bacteria (it was not tested whether they only kill bacteria).