Bax Inhibitor Peptide V5 is primarily used in research to study apoptosis, a process of programmed cell death. It functions by inhibiting the activity of Bax, a protein that promotes apoptosis. This peptide is particularly valuable in experimental settings where researchers aim to understand the mechanisms of cell survival and death. By blocking Bax, it helps in investigating conditions where preventing cell death is beneficial, such as in neurodegenerative diseases, ischemic injuries, and certain types of cancer. Additionally, it serves as a tool in drug development to identify potential therapeutic targets that can modulate apoptosis.