Peptide bonds are formed between which group of amino acids?

Answer

To answer the question "Peptide bonds are formed between which group of amino acids?", we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Amino Acids**:
- Amino acids are the building blocks of proteins. Each amino acid has two key functional groups: an amino group (-NH2) and a carboxyl group (-COOH).

2. **Identifying the Groups Involved in Peptide Bond Formation**:
- A peptide bond is formed specifically between the carboxyl group of one amino acid and the amino group of another amino acid.

3. **The Chemical Reaction**:
- When two amino acids come together, the carboxyl group of the first amino acid reacts with the amino group of the second amino acid. This reaction results in the release of a water molecule (a process known as dehydration synthesis or condensation reaction).

4. **Formation of the Peptide Bond**:
- After the release of water, a covalent bond is formed between the carbon atom of the carboxyl group of the first amino acid and the nitrogen atom of the amino group of the second amino acid. This bond is known as a peptide bond.

5. **Conclusion**:
- Therefore, peptide bonds are formed between the alpha carboxyl group of one amino acid and the alpha amino group of another amino acid.

### Final Answer:
Peptide bonds are formed between the alpha carboxyl group of one amino acid and the alpha amino group of another amino acid.

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