The following are structural diagrams of a selection of newly discovered amino acids. OH HO C-OH CH3 NH2 OH Ho NH, C=0 NH a) Select 1 amino acid. Redraw it. Label the alpha carbon and circle/highlight the entire backbone of the amino acid. b) The amino acids are part of a channel protein embedded in the cell membrane. Choose 2 amino acids (from above) that you would expect to find within the interior/middle of the cell membrane. Draw the formation of the dipeptide using the 2 amino acids you selected. Identify the other products formed in the reaction.

please let it be for the three letter amino acid sequence

The pH vs charge graph for a triprotic amino acid is shown below. Please answer the following questions about the amino acid. Net Charge 0 2 4 Alpha amino [Select] 6 R [Select] pH a. Which of the following triprotic amino acids is this? Alpha carboxyl [Select] 8 10 12 [ Select] 14 1 0.5 0 -0.5 -1 b. What is the isoelectric point? (Please select the appropriate range in which the isoelectric point falls) (Hint - look up the pKa values in the pKa table for amino acids, which was in video one of today's lecture) [Select] -1.5 c. What form of this amino acid dominates at a pH of 14? Please select the correct form for each ionizable group. -2

Attach an amino acid with the “-SH” functional group below. (not super long answers please) What is the name of the -SH functional group? What level of protein structure is determined by these amino acids? Explain