Salma Ahmed
English Lit. GCSE Student
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Enzymes.
- Words:
- 666
- Submitted:
- Mon Jul 12 2004
Have a little read: ... Enzymes There are many reasons why enzymes have such a high specificity. The first variable is an enzyme's primary structure. A primary structure is just a combination of amino acids. There are twenty different amino acids that the primary structure can be created from. Every enzyme has a different order that the acids are placed in and each one has a different number or amino acids. The slightest change in this structure can affect a protein's conformation and function. The secondary structure is a regular, repeated, coiling and folding of a protein's polypeptide backbone. This folding is stabilized by hydrogen bonds between peptide linkages. These sections of polypeptide chains are repeatedly coiled or folded into patterns that add to the protein's overall conformation. There are two types of secondary structures. They are alpha helixes and beta pleated sheets. Alpha helixes are helical coils stabilized by a hydrogen bond between every fourth peptide
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