Collagen Fiber

Collagen fibers are tough, elongated protein structures that form a major component of the extracellular matrix in animal tissues. They provide structural support, strength, and integrity to various organs and tissues throughout the body. They are essential for maintaining tissue architecture and mechanical properties such as tensile strength. The basic unit is tropocollagen, composed of three alpha chains wound into a triple helix with a repeating Gly-X-Y motif. Multiple types exist, including I, II, and III, each with tissue-specific distributions. They play critical roles in tissue repair and anchoring cells. While not a direct therapeutic target in the classic sense, understanding collagen's role in disease is crucial for developing targeted therapies that modulate its synthesis, degradation, or cross-linking.