👉 Muspikes are a type of protein found in the human body, which plays an important role in maintaining bone health. They are also known as osteopontin or osteocalcin and play a crucial role in the development and maintenance of bones. Osteopontin is produced by the osteoblasts (osteoclasts) during bone formation and repair processes. It consists of three domains: the extracellular domain, the cytoplasmic domain, and the transmembrane