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Polypeptide chains are composed of amino acids and can appear in alpha-helix or beta-sheet form.
protein, secondary structure, polypeptide, alpha-helix, beta-sheet, amino acid, peptide, peptide bond, amide bond, screw thread, fold, right-handed, hydrogen bond, chemistry, biology, biochemistry
Amino acids are the monomers of proteins.
Oxygen carrier protein in our red blood cells.
Enzymes are protein molecules catalysing biochemical reactions. Their activity can be regulated.
While the density of spider silk is less than that of nylon filaments, its tensile strength is greater than that of steel.
Fibroin is a fibrillar protein excreted by silkworms.
Amino acids that make up proteins are bound by peptide bonds.
The structure and arrangement of polypeptide chains affects the spatial structure of proteins.
Human blood consists of blood cells and plasma.
Viruses consist of protein and DNA or RNA; they reprogram infected cells to produce more viruses.