I don't know about enzymes, but bacteriophages (viruses that target bacteria) are species specific, and have been used successfully as antibacterial treatments:

I don't know about enzymes, but bacteriophages (viruses that target bacteria) are species specific, and have been used successfully as antibacterial treatments: https://en.wikipedia.org/wiki/Phage_therapy https://en.wikipedia.org/wiki/Phage_therapy