13. Which particular part of the structure of an amino acid is only present in the N-terminal amino acid of a peptide? E

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13 Which Particular Part Of The Structure Of An Amino Acid Is Only Present In The N Terminal Amino Acid Of A Peptide E 1 (47.54 KiB) Viewed 12 times

13. Which particular part of the structure of an amino acid is only present in the N-terminal amino acid of a peptide? Explain your answer. 14. The coronavirus that causes Covid 19 disease binds to its target cells through an interaction between a viral protein (the spike protein) and a human protein (the ACE receptor), which allows infection of the human cells by the virus. The coronavirus has evolved quite rapidly since it first infected human beings (late in the 2019 calendar year) to become more infectious, creating variants labeled with Greek letters (for example, alpha, delta, omicron). Explain how this evolution has occurred and what types of changes to the spike protein might have improved its binding to the ACE receptor on human cells.