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The alpha-amino acid which contains the ...

The `alpha`-amino acid which contains the aromatic side chain is:

A

proline

B

tyrosine

C

valine

D

serine

Text Solution

AI Generated Solution

The correct Answer is:
To determine the alpha-amino acid that contains an aromatic side chain, we will analyze the structures of the given options: proline, tyrosine, valine, and serine. ### Step-by-Step Solution: 1. **Identify the Structure of Proline**: - Proline is a cyclic amino acid with the following structure: ``` H2N | C / \ CH2 CH2 \ / C | COOH ``` - **Analysis**: Proline does not have an aromatic side chain. Therefore, it is not the correct answer. 2. **Identify the Structure of Tyrosine**: - Tyrosine has the following structure: ``` OH | H2N-C-COOH | CH2 | C6H4 ``` - **Analysis**: Tyrosine contains a phenolic group (C6H4) which is aromatic. Therefore, tyrosine is a candidate for the correct answer. 3. **Identify the Structure of Valine**: - Valine has the following structure: ``` H2N | C / \ CH CH3 \ \ C | COOH ``` - **Analysis**: Valine does not have an aromatic side chain. Therefore, it is not the correct answer. 4. **Identify the Structure of Serine**: - Serine has the following structure: ``` H2N | C / \ H OH \ \ C | COOH ``` - **Analysis**: Serine does not have an aromatic side chain. Therefore, it is not the correct answer. 5. **Conclusion**: - After analyzing all the options, the only amino acid that contains an aromatic side chain is **tyrosine**. Thus, the correct answer is **tyrosine**. ### Final Answer: The alpha-amino acid which contains the aromatic side chain is **tyrosine**.
To determine the alpha-amino acid that contains an aromatic side chain, we will analyze the structures of the given options: proline, tyrosine, valine, and serine. ### Step-by-Step Solution: 1. **Identify the Structure of Proline**: - Proline is a cyclic amino acid with the following structure: ``` H2N ...
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