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The amino acid which contain a hydroxy g...

The amino acid which contain a hydroxy group in the side chain

A

cysteine

B

glutamine

C

serine

D

leucine

Text Solution

AI Generated Solution

The correct Answer is:
To determine which amino acid contains a hydroxy group in its side chain, we will analyze the given options one by one. ### Step-by-Step Solution: 1. **Identify the Options**: The options provided are: - A) Cysteine - B) Glutamine - C) Serine - D) Leucine 2. **Analyze Cysteine**: - Cysteine has a thiol group (-SH) in its side chain. - Structure of Cysteine: - NH2-CH(COOH)-CH2-SH - Conclusion: Cysteine does not contain a hydroxy group, so this option is **incorrect**. 3. **Analyze Glutamine**: - Glutamine has an amide group in its side chain, not a hydroxy group. - Structure of Glutamine: - NH2-CH(COOH)-CH2-CO-NH2 - Conclusion: Glutamine does not contain a hydroxy group, so this option is **incorrect**. 4. **Analyze Serine**: - Serine contains a hydroxy group (-OH) in its side chain. - Structure of Serine: - NH2-CH(COOH)-CH2-OH - Conclusion: Serine does contain a hydroxy group, so this option is **correct**. 5. **Analyze Leucine**: - Leucine has a branched hydrocarbon side chain and does not contain a hydroxy group. - Structure of Leucine: - NH2-CH(COOH)-CH(CH3)-CH2-CH3 - Conclusion: Leucine does not contain a hydroxy group, so this option is **incorrect**. ### Final Answer: The amino acid which contains a hydroxy group in the side chain is **Serine (C)**.
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