Proteins

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  • Created by: Eema003
  • Created on: 24-02-16 17:00
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  • Proteins (polypeptides)
    • Structure of an amino acid
      • A central carbon atom to which 4 different chemical groups are attached:
        • An amino group
          • -NH2
        • A Carboxyl Group
          • -COOH
        • A Hydrogen atom
          • -H
        • R-side group
          • A variety of different chemical groups.
    • Formation of a Peptide bond
      • The removal of water in a condensation reaction.
    • Primary structure
      • Putting amino acids in order
      • Bonded with peptide bonds
    • Secondary Structure
      • Basic level of protein folding
      • Held together by hydrogen bonds
      • You get Alpha helices and Beta pleats
    • Tertiary structure
      • Compact globular structure
      • Folding the whole peptide chain
      • Every protein has a unique tertiary structure
      • Held together by R - group
      • Fibrous --> Collagen
      • Globular --> Enzu=ymes
    • Quartenary
      • Found in proteins
      • Contains more than 1 polypeptide chain
      • Each polypeptide codes for a different gene

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