Pawel Mitkowski from the Laboratory of Protein Engineering at the Mossakowski Medical Research Institute, Polish Academy of Sciences, is the winner of the poster competition in session no 9 – “Bacteriophages and peptides – new alternative therapies” at the XXIX National Congress of the Polish Society of Microbiologists. The event took place on 14-17 September in Warsaw, Poland. In the awarded work entitled “Engineering of broad specificity enzyme based on metallopeptidase M23 from Enterococcus faecalis“, the authors – Pawel Mitkowski and Izabela Sabala – presented a method of preparin three new bacteriolytic enzymes by joining to the EnpA catalytic domain one of the three SH3b cell wall binding domain from different proteins. As a result, the authors obtained enzymes with a wider tolerance to environmental conditions, which can find a wide range of applications as non-antibiotic antibacterial agents. .