Refer to the Data Below to Answer the Following Questions

question 13

Essay

Refer to the data below to answer the following questions:
The octapeptide saralasin is a specific antagonist of angiotensin II. A derivative of saralasin is used therapeutically as an antihypertensive. Amino acid analysis of saralasin show the presence of the following amino acids:
Ala, Arg, His, Pro, Sar, Tyr, Val₂
Refer to instructions. Partial hydrolysis of saralasin with dilute hydrochloric acid yields the following fragments:
Tyr-Val-His
Sar-Arg-Val
His-Pro-Ala
Val-Tyr-Val
Arg-Val-Tyr
What is the structure of saralasin?
$\begin{array} { l } \text { Sar-Arg-Val } \\~~~~\text { Arg-Val-Tyr } \\~~~~~~~~~~\text { Val-Tyr-Val } \\~~~~~~~~~~~~~~\text { Tyr-Val-His } \\~~~~~~~~~~~~~~~~~~~~~~~~~~~~{ \text { His-Pro-Ala } }\end{array}$

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