Which protein has a triple helix molecular structure and works with calcium to form bones?

Collagen is the protein that has a triple helix molecular structure and is crucial for the formation of bones. Its unique triple helix configuration provides tensile strength and structural integrity, which is essential in connective tissues, including cartilage, tendons, ligaments, and especially bone. Collagen fibers play a pivotal role in the bone matrix, working in conjunction with minerals like calcium to form a sturdy skeletal structure.

The composition of collagen includes specific amino acids that contribute to the stability of its triple helix, making it resilient to mechanical stress. Furthermore, collagen serves as the scaffold upon which minerals such as calcium phosphate are deposited, leading to the calcification and strengthening of bone tissue.

This structural protein is dominant in the extracellular matrix, the network that provides structural and biochemical support to surrounding cells. Given its integral role in skeletal health and integrity, collagen is vital for maintaining strong bones and preventing conditions such as osteoporosis as individuals age.