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However, ancient proteins are still one of the most informative biomolecules. Proteins tend to degrade more slowly than DNA, especially biomineralised proteins. [32] [62] While ancient lipids can be used to differentiate between marine, plant and animal fats, [63] ancient protein data is high-resolution with taxon- and tissue-specificities.
Collagen is also abundant in corneas, blood vessels, the gut, intervertebral discs, and the dentin in teeth. [3] In muscle tissue, it serves as a major component of the endomysium. Collagen constitutes 1% to 2% of muscle tissue and accounts for 6% of the weight to skeletal muscle. [4] The fibroblast is the most common cell creating collagen in ...
Hydroxyproline is a major component of the protein collagen, [3] comprising roughly 13.5% of mammalian collagen. Hydroxyproline and proline play key roles for collagen stability. [ 4 ] They permit the sharp twisting of the collagen helix. [ 5 ]
Vitamin C, for example, aids in the collagen synthesis process, keeping skin firm and plump. Zinc is helpful for making keratin, the protein found in hair and nails. Copper helps the body process ...
The same cannot be said for human bone collagen, as δ 18 O values in collagen seem to be impacted by drinking water, food water, and a combination of metabolic and physiological processes. [ 84 ] δ 18 O values from bone minerals are essentially an averaged isotopic signature throughout the entire life of the individual.
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