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Collagen alpha-1(IV) chain (COL4A1) is a protein that in humans is encoded by the COL4A1 gene on chromosome 13. [ 5 ] [ 6 ] It is ubiquitously expressed in many tissues and cell types. [ 7 ] COL4A1 is a subunit of the type IV collagen and plays a role in angiogenesis . [ 8 ]
Tough bundles of collagen called collagen fibers are a major component of the extracellular matrix that supports most tissues and gives cells structure from the outside, but collagen is also found inside certain cells. Collagen has great tensile strength, and is the main component of fascia, cartilage, ligaments, tendons, bone and skin.
An elastic artery (conducting artery or conduit artery) is an artery with many collagen and elastin filaments in the tunica media, which gives it the ability to stretch in response to each pulse. [1] This elasticity also gives rise to the Windkessel effect , which helps to maintain a relatively constant pressure in the arteries despite the ...
Type I collagen production is inhibited by the inability of the altered procollagen strands to associate and form the triple-stranded, ropelike structure of mature collagen. These alterations negatively affect tissues that are rich in type I collagen, such as the skin, bones, teeth, and tendons, leading to the signs and symptoms of type III ...
This (Gly-X-Y)n sequence is repeated 343 times in the type III collagen molecule. Proline or hydroxyproline is often found in the X- and Y-position giving the triple helix stability. In addition to being an integral structural component of many organs, type III collagen is also an important regulator of the diameter of type I and II collagen ...
Firstly, stiffened arteries compromise the Windkessel effect of the arteries. [22] The Windkessel effect buffers the pulsatile ejection of blood from the heart converting it into a more steady, even outflow. This function depends on the elasticity of the arteries and stiffened arteries require a greater amount of force to permit them to ...
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