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The major structural protein in the body, collagen makes up 25% of all vertebrate protein. The correct answer is: YES Primary structure in proteins is the specific amino acid sequence of a polypeptide chain. LEFT-HANDED HELICAL STRANDS are wound into a supercoiled triple helix in collagen. The unique properties of each type are due to segments in the collagen molecules that disrupt the helical structure. Collagen is a structural support for most tissues in the body as the extracellular matrix, and is particularly abundant in connective tissue. At this level, every protein has a specific three-dimensional shape and presents functional groups on its outer surface, allowing it to interact with other molecules, and giving it its unique function. This important principle of biochemistry was first determined by the biochemist Christian Anfinsen in studies of the enzyme ribonuclease. The Primary structure of collagen. a. The primary structure of collagen includes long stretches of the repeating sequence glycine-X-Y, where X and Y are frequently proline or lysine. glycine is the smallest amino acid and this together with proline allow the polypeptide chain to be wound into a tightly coiled, straight and unbranched helix. Collagen (/ ˈ k ɒ l ə dʒ ɪ n /) is the main structural protein in the extracellular matrix found in the body's various connective tissues.As the main component of connective tissue, it is the most abundant protein in mammals, making up from 25% to 35% of the whole-body protein content. Twenty eight different types of collagen have been identified in vertebrates. These are caused by the amino acids in the X … a repeat sequence of 3 amino acids glycine-proline-X (any other amino acid) The Secondary/Tertiary Structure of Collagen. The hydrogen bonds are very strong and keep the connective tissues in the body together. The tertiary structure or overall shape of collagen protein subunits is a helical chain. The tertiary structure of a protein refers to the arrangement of amino acid side chains in the protein. Generally, the information for protein structure is contained within the amino acid sequence of the protein itself. Collagen types I to IV are the most prevalent. Collagen: levels of structure and alignment Collagen structure and function Collagen is the most abundant protein in the human body, accounting for around 30% of the total amount of protein. Due to the ways in which the amino acids are arranged the protein can be hydrophobic or hydrophilic. Hydrogen bonding helps collagen to form its 'tertiary' structure. The tertiary structure is the structure at which polypeptide chains become functional. Soluble proteins, like haemoglobin will fold with the hydrophobic side on the inside and the hydrophilic side on the outside. Tertiary Structure Definition.

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