Collagen contains specific amino acids â Glycine, Proline, Hydroxyproline and Arginine. These amino acids have a regular arrangement in each of the three chains of these collagen subunits. The sequence often follows the pattern Gly-Pro-X or Gly-X-Hyp, where X may be any of various other amino acid residues.ollagen contains specific amino acids â Glycine, Proline, Hydroxyproline and Arginine. These amino acids have a regular arrangement in each of the three chains of these collagen subunits. The sequence often follows the pattern Gly-Pro-X or Gly-X-Hyp, where X may be any of various other amino acid residues.
Opal is one of the world's most beautiful and precious gemstones, predominantly found in Australia. It is one of only six types of precious gemstones found on planet earth, sharing prestigious company with diamonds, rubies, sapphires, emeralds, and pearls.
Ethiopian Welo opal is a new type of opal found in 2008 in the Welo region of Ethiopia. It is considered to be the most stable kind of opal found in Africa so far.atrix opal is a type of boulder opal that is found diffused throughout the host rock. Some types of matrix opals are treated with black carbon to enhance color. Fire opal. Fire opal is a term commonly used to describe opals which display a significant amount of red coloring.