proteins

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  • made up of a chain of amino acids/polypeptides
    • proteins
      • dipeptide is 2 amino acids joined
      • theyre catalyic
      • many hormones are proteins
      • globular
        • soluble
          • hydrophilic groups outside,water loving
            • hydrophobic groups inside,water hating
        • eg.haemaglobin
        • round,compact polypeptide chains
        • coiled
        • become insolube and inactive when denatured
      • carboxylic group
      • uses
        • transport in and out of cells
        • transport
        • hormones
  • polypeptide chains held together by crosslinks
    • this makes them strong but insoluble in water
    • fibrous
      • proteins
        • dipeptide is 2 amino acids joined
        • theyre catalyic
        • many hormones are proteins
        • globular
          • soluble
            • hydrophilic groups outside,water loving
              • hydrophobic groups inside,water hating
          • eg.haemaglobin
          • round,compact polypeptide chains
          • coiled
          • become insolube and inactive when denatured
        • carboxylic group
        • uses
          • transport in and out of cells
          • transport
          • hormones
      • eg.collagen
      • loose structural length when denatured

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