Protein Kinase C (19-31) is a peptide fragment derived from the regulatory domain of Protein Kinase C (PKC), a family of enzymes involved in various cellular signaling pathways. This specific fragment is often utilized in research to study the mechanisms of PKC activation and inhibition. It serves as a competitive inhibitor, binding to PKC and blocking its interaction with other molecules, which helps in understanding the enzyme's role in processes like cell proliferation, differentiation, and apoptosis. Additionally, it is used in biochemical assays to explore the structural and functional aspects of PKC, aiding in the development of targeted therapies for diseases where PKC signaling is dysregulated, such as cancer, diabetes, and neurodegenerative disorders. Its application in laboratory studies provides valuable insights into the modulation of PKC activity and its impact on cellular functions.