Bio Proteins

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  1. importance of protein structure
    protein's function depends on its' structure which consists of chains of amino acids that twist and fold into a very complex shape
  2. structure of amino acid
    • contain a carboxyl group, amine group and one of 20 different side chains (R group)
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  3. 4 properties of amino acids
    • hydrophobic
    • hydrophilic
    • acidic
    • base
  4. peptide bond
    a bond between the amine group of one amino acid and the carboxyl group of another
  5. polypeptide
    chain of amino acids linked by peptide bonds
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    polypeptide formation
  7. protein synthesis
    • primary structure (polypeptide formation) - linear sequence of amino acids
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    • secondary structure - hydrogen bonds along the polypeptide backbone twist the polypeptide into a coil or sheet
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    • tertiary structure - bonds between side chains give the polypeptide its overall 3D structure
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    • quaternary structure - in some proteins, two or more polypeptide chains associate and function as one molecule (like hemoglobin)
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  8. denature
    • to unravel the shape of a protein or other large biological molecule
    • changes in a protein's structure may also alter its' function
  9. antibodies
    recognize infectious agents and change structure
Card Set:
Bio Proteins
2011-10-18 20:05:18
biology proteins

biology ch 4
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