—collagenous /keuh laj"euh neuhs/, adj./kol"euh jeuhn/, n. Biochem.any of a class of extracellular proteins abundant in higher animals, esp. in the skin, bone, cartilage, tendon, and teeth, forming strong insoluble fibers and serving as connective tissue between cells, yielding gelatin when denatured by boiling.[1860-65; < Gk kólla glue + -GEN]
* * *Any of a class of organic compounds, the most abundant proteins in the animal kingdom, occurring widely in tendons, ligaments, dentin (see tooth), cartilage, and other connective tissues.Their molecules share a triple-helix configuration. Collagens occur as whitish, inelastic fibres of great tensile strength and low solubility in water. Soluble when first synthesized (the form used in personal-care preparations), collagen changes to a more stable, insoluble form. Glue made from collagen in animal hides and skins is a widely used adhesive. Specially treated forms of collagen are used in medicine and surgery (including lip implants and other cosmetic surgery), in prostheses, and as sausage casings. Collagen is converted to gelatin by boiling it in water.
* * *▪ proteinany of a group of proteins that are components of whitish, rather inelastic fibres of great tensile strength present in tendon and ligament and in the connective tissue layer of the skin—dermis—and in dentin and cartilage. Collagenous fibres occur in bundles up to several hundred microns wide, and the individual fibres can be separated into fine fibrils; the fibrils, furthermore, consist of even finer filaments with a periodic banded structure.Collagen is a scleroprotein (q.v.), being one of a family of proteins marked by low solubility in water. Collagen is especially rich in the amino acid glycine, and it is the only protein known to contain a substantial proportion of hydroxyproline. Upon exposure to boiling water, collagen is converted to gelatin.
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См. также в других словарях:
Collagen VI — is a form of collagen primarily associated with the extracellular matrix of skeletal muscle. It is associated with the genes COL6A1, COL6A2, and COL6A3. Defects are associated with Bethlem myopathy and Ullrich congenital muscular… … Wikipedia
Collagen — is the principal protein of the skin, tendons, cartilage, bone and connective tissue. * * * The major protein (comprising over half of that in mammals) of the white fibers of connective tissue, cartilage, and bone, that is insoluble in water but… … Medical dictionary
Collagen — Col la*gen, n. [Gr. ko lla glue + gen.] (Physiol. Chem.) The chemical basis of ordinary connective tissue, as of tendons or sinews and of bone. On being boiled in water it becomes gelatin or glue. [1913 Webster] … The Collaborative International Dictionary of English
collagen — collagen. См. коллаген. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
Collagen — Collagen, Glutin (s.d.) gebendes Gewebe … Pierer's Universal-Lexikon
collagen — structural protein of connective tissue, 1843, from Fr. collagène, from Gk. kolla glue + gen giving birth to (see GEN (Cf. gen)) … Etymology dictionary
collagen — ► NOUN ▪ the main structural protein found in animal connective tissue, yielding gelatin when boiled. ORIGIN French collagène, from Greek kolla glue … English terms dictionary
collagen — [käl′ə jən] n. [< Gr kolla, glue + GEN] a fibrous protein found in connective tissue, bone, and cartilage collagenic [käl′əjən′ik] adj. collagenous [kə laj′ə nəs] adj … English World dictionary
Collagen — Tropocollagen triple helix Collagen /ˈkɒlədʒɨn/ is a group of naturally occurring proteins found in animals, especially in the flesh and connective tissues of mammals. It is the main component of connectiv … Wikipedia
collagen — [[t]kɒ̱ləʤən[/t]] N UNCOUNT Collagen is a protein that is found in the bodies of people and animals. It is often used as an ingredient in cosmetics or is injected into the face in cosmetic surgery, in order to make the skin look younger. The… … English dictionary