Based on the structure shown below, answer the next set of questions. Are these

Question

Based on the structure shown below, answer the next set of questions. Are these peptide chains parallel or antiparallel? Label the N-terminus on BOTH chains. Use dotted lines to show the hydrogen bonding interactions that could hold the two chains together in an alpha-helix or beta-sheet. Be careful here. How do the alpha helix and the beta sheet differ? Explain clearly. For full credit you must discuss both chains individually and mention intermolecular and intramolecular interactions. How many chains are involved 'n' the alpha helix us the beta pleated sheet.

Explanation / Answer

A. These peptide chains are parallel, because their N-terminal ends are on the same side.

B. On both chains, N-terminus is present on the left side.

C.

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