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Monday 13 May 2019

Definition : Collagen is the most common protein in the animal world, providing the extracellular framework for all multicellular organisms.

The collagens are composed of a triple helix of three polypeptide α chains, having a gly-x-y repeating sequence. Currently 27 different types of collagens encoded by 41 genes ( COLs ) dispersed on at least 14 chromosomes are known.


- anomalies of collagen / abnormal collagen

- collagen hyalinization
- collagen necrobiosis