Question:
What is the functional group present in serine, an amino acid, in addition to \( -\text{NH}_2 \) and \( -\text{COOH} \) groups?
What is the functional group present in serine, an amino acid, in addition to \( -\text{NH}_2 \) and \( -\text{COOH} \) groups?
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Remember: serine contains a polar -OH group in its side chain, making it a polar uncharged amino acid.
Updated On: May 17, 2025
- -OH
- -SH
- -NH
- C(=O)-NH_2
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The Correct Option is A
Solution and Explanation
Serine is one of the polar amino acids. Its structure includes:
- An amino group \( -\text{NH}_2 \)
- A carboxylic group \( -\text{COOH} \)
- And a side chain containing a hydroxyl group \( -\text{OH} \)
Structure of serine: \[ \text{HO-CH}_2\text{-CH(NH}_2\text{)-COOH} \] Hence, the additional functional group is \( -\text{OH} \).
- An amino group \( -\text{NH}_2 \)
- A carboxylic group \( -\text{COOH} \)
- And a side chain containing a hydroxyl group \( -\text{OH} \)
Structure of serine: \[ \text{HO-CH}_2\text{-CH(NH}_2\text{)-COOH} \] Hence, the additional functional group is \( -\text{OH} \).
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