confers_resistance_to_antibiotic confers_resistance_to_antibiotic defensin defensin resistant mprF Brucella suis mprF antibiotic_resistance Bsui_mprF ARO:3003772 MprF is a integral membrane protein that modifies the negatively-charged phosphatidylglycerol on the membrane surface. This confers resistance to cationic peptides that disrupt the cell membrane, including defensins.