Observe the structures above and answer the questions below. Please pay attention to the number of empty fields as this will give you an idea about the number of words required in your answer. 1. What is the name we give to structures which are not complete polypeptide chains but form supersecondary structures that are conserved between different proteins and have a specific function? 2. Name the motif in structure A: 3. Name the motif in structure B: 4. Name the motif in structure C: 5. What is the pink ball in structure B referring to? 6. Structures A, B, and C are motifs which appear in proteins that facilitate the conversion of DNA into MRNA. What are these proteins called? 7. What are the structures represented in D? and 8. In structure D, the beta sheet formed by B1-84 is rich in which two amino acids?

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