It is fibrous proteins.The most familiar of the fibrous proteins are probably the keratins, which form the protective covering of all land vertebrates: skin, fur, hair, wool, claws, nails, hooves, horns, scales, beaks and feathers.
1 Secondary Structure-refers to the coiling or folding of a polypeptide chain that gives the protein its 3-D shape. 2  There are two types of secondary structures observed in proteins. 3  One type is the alpha (α) helix structure. 1 There are two types of secondary structures observed in proteins. 2  One type is the alpha (α) helix structure. 3  This structure resembles a coiled spring and is secured by hydrogen bonding in the polypeptide chain. 4  The second type of secondary structure in proteins is the beta (β) pleated sheet. The three-dimensional shape of a protein is determined by its primary structure. The order of amino acids establishes a protein's structure and specific function. The distinct instructions for the order of amino acids are designated by the genes in a cell. 1 There are two types of secondary structures observed in proteins. 2  One type is the alpha (α) helix structure. 3  This structure resembles a coiled spring and is secured by hydrogen bonding in the polypeptide chain. 4  The second type of secondary structure in proteins is the beta (β) pleated sheet. Structural Protein Measured in terms of their total mass, the largest class is the structural one. Structural proteins are fibrous proteins. The most familiar of the fibrous proteins are probably the keratins, which form the protective covering of all land vertebrates: skin, fur, hair, wool, claws, nails, hooves, horns, scales, beaks and feathers.  1 Quaternary Structure-refers to the structure of a protein macromolecule formed by interactions between multiple polypeptide chains. 2  Each polypeptide chain is referred to as a subunit. 3  Proteins with quaternary structure may consist of more than one of the same type of protein subunit. 1 There are two types of secondary structures observed in proteins. 2  One type is the alpha (α) helix structure. 3  This structure resembles a coiled spring and is secured by hydrogen bonding in the polypeptide chain. 4  The second type of secondary structure in proteins is the beta (β) pleated sheet. Answers. Best Answer: A structural protein is usually something that provides scaffolding or something that give the cell or one of it's organelles shape. A functional protein is usually something like an enzyme, a protein that catalyzes a reaction of some kind. Examples of structural proteins would be things like actin, microtubules, and the proteins that make up nuclear core complex. Non-structural protein 1, which is encoded by the influenza A virus, is an RNA-binding protein that is required for virus replication. NS1 has three different RNA-binding activities. First, it binds to the poly A tails of cellular (not viral) pre-mRNAs.  Proteins differ from one another primarily in their sequence of amino acids, which is dictated by the nucleotide sequence of their genes, and which usually results in protein folding into a specific three-dimensional structure that determines its activity. A linear chain of amino acid residues is called a polypeptide. A protein contains at least one long polypeptide. Short polypeptides, containing less than 20-30 residues, are rarely considered to be proteins and are commonly called peptides, or sometimes oligopeptides. Proteins also have structural or mechanical functions, such as actin and myosin in muscle and the proteins in the cytoskeleton, which form a system of scaffolding that maintains cell shape. Other proteins are important in cell signaling, immune responses, cell adhesion, and the cell cycle. The primary structure of a protein refers to the linear sequence of amino acids in the polypeptide chain. The primary structure is held together by covalent bonds such as peptide bonds, which are made during the process of protein biosynthesis or translation. A structural domain is an element of the protein's overall structure that is self-stabilizing and often folds independently of the rest of the protein chain. Many domains are not unique to the protein products of one gene or one gene family but instead appear in a variety of proteins. Protein structure is the biomolecular structure of a protein molecule. Proteins are polymers — specifically polypeptides — formed from sequences of monomer amino acids. A structural domain is an element of the protein's overall structure that is self-stabilizing and often folds independently of the rest of the protein chain. Many domains are not unique to the protein products of one gene or one gene family but instead appear in a variety of proteins.
http://biology.about.com/od/molecularbiology/ss/protein-structure.htm http://biology.about.com/od/molecularbiology/ss/protein-structure.htm http://dl.clackamas.edu/ch106-08/structur1.htm http://biology.about.com/od/molecularbiology/ss/protein-structure.htm https://answers.yahoo.com/question/index?qid=20091215173112AAjO4W9 http://www-nmr.cabm.rutgers.edu/photogallery/structures/html/page2.html https://en.wikipedia.org/wiki/Protein https://en.wikipedia.org/wiki/Protein_structure https://en.wikipedia.org/wiki/Protein_structure
what is structural protein