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    This for students taking the edexcel unit 1 exam
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    My question : How does the primary structure of an enzyme determine its function?
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    The sequence of amino acids that make up the protein controls the shape it takes when it coils up. In amino acids ther are -OH groups (hydroxyl groups) which are extremely polar so they help the protein coil up. It is the way the protein coils up that determines its function. If it twists then it is called a fibrous protein and they are structural proteins like keratin (hair) the other type of protein is a globular protein. This is when the amino acid chain coils up in t a ball like structure. Because the amino acid sequence is specific to the function of the protein it is different for each protein so if an enzyme is being made the protein will coil up into a specific shape so it fits the substrate due to the unique order on the amino acids.
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    Thanks for the reply
 
 
 
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