Collagen
Collagen is a group of naturally occurring proteins. In nature, it is found exclusively in animals, especially in the flesh and connective tissues of mammals.[1]
Vitamin C is vital for collagen synthesis, while Vitamin E improves its production.[2]
It is the main component of connective tissue, and is the most abundant protein in mammals. It makes up about 25% to 35% of the whole-body protein content.[3]
Collagen, in the form of elongated fibrils, is mostly found in fibrous tissues such as tendon, ligament and skin, and is also abundant in cornea, cartilage, bone, blood vessels, the gut, and intervertebral discs.
Collagen makes up 1% to 2% of muscle tissue, and accounts for 6% of the weight of strong, tendinous muscles.[4]
Gelatin, which is used in the food industry, is collagen that has been irreversibly hydrolyzed.
Collagen Media
The triple helix: three left-handed polyproline type II helices (red, green, blue) assemble by an axial hydrogen bond to form a right-handed triple helix, the tertiary structure of collagen.
Skeleton and bones - Collagen
Action of lysyl oxidase
Three polypeptides coil to form tropocollagen. Many tropocollagens then bind together to form a fibril, and many of these then form a fibre.
The D-period of collagen fibrils results in visible 67nm bands when observed by electron microscopy.
A salami and the collagen casing (below) it came in
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References
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