â (statistics) a variable in a logical or mathematical expression whose value depends on the independent variable 1. the dependent variable. â (statistics) a variable in a logical or mathematical expression whose value depends on the independent variable 1. dependent variable [ the ~ ] noun.
The building blocks that make up all proteins, including collagen, are called amino acids. An essential amino acid is one your body cannot make, so you have to get it from food or dietary supplements. Collagen is the most abundant protein in the body and is a key constituent of all connective tissues. Collagen provides the infrastructure of the musculoskeletal system, essential for mobility.
The collagen protein is composed of a triple helix, which generally consists of two identical chains (Î±1) and an additional chain that differs slightly in its chemical composition (Î±2). The amino acid composition of collagen is atypical for proteins, particularly with respect to its high hydroxyproline content.The most common motifs in the amino acid sequence of collagen are glycine-proline-X and glycine-X-hydroxyproline, where X is any amino acid other than glycine, proline or hydroxyproline.ollagen, in the form of elongated fibrils, is mostly found in fibrous tissues such as tendons, ligaments and skin. It is also abundant in corneas, cartilage, bones, blood vessels, the gut, intervertebral discs and the dentin in teeth. In muscle tissue, it serves as a major component of the endomysium.