Disrupting SARS-CoV-2: molecular dynamics insights into the role of human β-defensin 2 and α-defensin 5 peptides in membrane structure alteration

As a part of the host-defense system of many organisms, defensins are considered a suitable option for treating infection agents. Using the molecular dynamics simulation, this work studied the effects of two important human antimicrobial peptides, human β-defensin 2 and human α-defensin 5 on the SARS-CoV-2 membrane. The results demonstrate that defensin peptides notably alter the bilayer membrane's structure and physicochemical activity leading to a hydrophobic mismatch that impacts transmembrane protein channel function. This study elucidates the antiviral mechanisms of defensins and their therapeutic potential, offering valuable insights for researchers in virology and public health seeking novel medications.