Cathepsin G substrate is primarily used in biochemical research to study the activity and function of the enzyme cathepsin G. This enzyme plays a significant role in immune responses and inflammation, making the substrate valuable for understanding these processes. Researchers utilize the substrate to measure enzymatic activity, aiding in the development of inhibitors that could potentially treat inflammatory diseases or immune-related disorders. Additionally, it is employed in assays to investigate the role of cathepsin G in tissue remodeling and wound healing, providing insights into its involvement in extracellular matrix degradation. The substrate is also used in drug discovery to screen compounds that modulate cathepsin G activity, contributing to the development of therapeutic agents.