👉 Subtiliser is a type of protein that is found in certain types of bacteria and yeast, but not in humans. It is used as an antibiotic to treat bacterial infections, especially those caused by Staphylococcus aureus. Bacteria are typically resistant to antibiotics because they have evolved ways to resist the effects of these drugs. However, some strains of bacteria can become resistant to subtiliser due to changes in their genetics or exposure to other antibiotics that mimic its antibiotic properties. This resistance