Collagens
collagens
Protein which contains one or more collagen-like domain. Collagen is a fibrous protein found in vertebrates, the major element of skin, bone, tendon, cartilage, blood vessels and teeth. It forms insoluble fibres of high tensile strength and which contains the unusual amino acids hyroxyproline and hydroxylysine. It is rich in glycine but lacks cysteine and tryptophan, and has an unusually regular amino-acid domain.