Neurokinin receptors are a type of protein found on the surface of certain cells in the body. They are part of the G protein-coupled receptor family and play a crucial role in transmitting signals related to pain, inflammation, and stress responses. There are three main types of neurokinin receptors: NK1, NK2, and NK3, each responding to specific neuropeptides like substance P and neurokinin A. These receptors are important in various physiological processes, including regulating mood, anxiety, and gastrointestinal function. Research into neurokinin receptors has potential implications for developing treatments for conditions such as depression, anxiety disorders, and chronic pain. Understanding their function can help in creating targeted therapies that modulate their activity.