The following diagram represents the structure of a dipeptide (peptide composed of 2 amino acids). The solid wedges represent bonds projecting toward the reader, while dashed wedges represent bonds projecting away from the reader. R1 and R2 represent the side chains of amino acids AA1 and AA2 respectively. Note Glycine is not one of the two amino acids. 1. On the diagram, indicate the position of all the asymmetric (chiral) carbons 2. Assigned the priorities of the atoms covalently bond to each asymmetric carbon (use your textbook. Fig. 1-12 to determine the atomic numbers) for the following dipeptides: #1: Valine-Cysteine #2: Valine-Asparagine. The structure of the side chains for valine, cysteine and asparagine can be found in your textbook (Figure 3-5) Briefly explain your assignment. 3. Determine the configuration (R or S) of all the asymmetric carbons. Briefly explain. 4. All the amino acids found in "natural" proteins are L-stereoisomers but artificial peptides can be synthesized with a mixture of L and D amino acids. Based on the R and S character of peptides #1 and 2. are these two peptides from natural or artificial origin? Briefly explain.