Sambutoxin is primarily used in scientific research, particularly in studies related to cell biology and toxicology. It acts as a potent inhibitor of protein kinase C (PKC), a key enzyme involved in signal transduction pathways that regulate cell growth, differentiation, and apoptosis. Due to its ability to selectively interfere with PKC activity, sambutoxin serves as a valuable tool for investigating the role of this enzyme in various cellular processes and disease mechanisms, including cancer and neurodegenerative disorders. Its application is mostly confined to in vitro experimental systems where precise control over signaling pathways is required.