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  2. Collagen - Wikipedia

    en.wikipedia.org/wiki/Collagen

    First, a three-dimensional stranded structure is assembled, mostly composed of the amino acids glycine and proline. This is the collagen precursor procollagen. Then, procollagen is modified by the addition of hydroxyl groups to the amino acids proline and lysine.

  3. Collagen, type I, alpha 1 - Wikipedia

    en.wikipedia.org/wiki/Collagen,_type_I,_alpha_1

    This mutation substitutes the amino acid cysteine for the amino acid arginine at position 134 in the protein made by the gene. (The mutation can also be written as Arg134Cys.) The altered protein interacts abnormally with other collagen-building proteins, disrupting the structure of type I collagen fibrils and trapping collagen in the cell.

  4. Collagen, type III, alpha 1 - Wikipedia

    en.wikipedia.org/wiki/Collagen,_type_III,_alpha_1

    Type III collagen is synthesized by cells as a pre-procollagen. [6] The signal peptide is cleaved off producing a procollagen molecule. Three identical type III procollagen chains come together at the carboxy-terminal ends, and the structure is stabilized by the formation of disulphide bonds. Each individual chain folds into a left-handed helix ...

  5. Hydroxyproline - Wikipedia

    en.wikipedia.org/wiki/Hydroxyproline

    Hydroxyproline and proline play key roles for collagen stability. [4] They permit the sharp twisting of the collagen helix. [5] In the canonical collagen Xaa-Yaa-Gly triad (where Xaa and Yaa are any amino acid), a proline occupying the Yaa position is hydroxylated to give a Xaa-Hyp-Gly sequence.

  6. Collagen, type XXIII, alpha 1 - Wikipedia

    en.wikipedia.org/wiki/Collagen,_type_XXIII,_alpha_1

    Collagen α-1 (XXIII) chain is a protein encoded by COL23A1 gene, which is located on chromosome 5q35 in humans, and on chromosome 11B1+2 in mice. [5] The location of this gene was discovered by genomic sequence analysis. Collagen XXIII is a type II transmembrane protein and the fourth in the subfamily of non-fibrillar transmembranous collagens ...

  7. The Top Hair, Skin, and Nail Vitamins for 2024: Best Picks ...

    www.aol.com/entertainment/top-hair-skin-nail...

    Marine collagen peptides to build strong hair, skin and nails ... Amino Acids. Key Benefits: Organic collagen support ... Vitamin A. Vitamin A is essential for proper skin function and assists in ...

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