In reductive amination, the product is:

Options

A. `alpha` ketoglutaric acid
B. glutamine
C. glutamate
D. alanine

Answer

**Step-by-Step Solution:**

1. **Understanding Reductive Amination:**
- Reductive amination is a biochemical process where an amino group is introduced into a carbonyl compound, typically an alpha-keto acid, in the presence of reducing agents.

2. **Identifying Reactants:**
- In this case, the primary reactant is alpha-ketoglutaric acid (α-ketoglutarate), and it reacts with ammonia (NH₃).

3. **Role of Enzymes:**
- The enzyme involved in this reaction is Glutamate Dehydrogenase. This enzyme facilitates the conversion of alpha-ketoglutarate and ammonia into glutamate.

4. **Reaction Overview:**
- The reaction can be summarized as:
\[ \text{α-ketoglutarate} + \text{NH}_3 + \text{NADPH} \xrightarrow{\text{Glutamate Dehydrogenase} } \text{Glutamate} + \text{NADP}^+ + \text{H}_2\text{O} \]

5. **Identifying the Product:**
- The primary product of this reaction is glutamate (also known as glutamic acid).

6. **Conclusion:**
- Therefore, in reductive amination involving alpha-ketoglutaric acid and ammonia, the product formed is glutamate.

**Final Answer:**
- The product of reductive amination is **Glutamate (Glutamic Acid)**.

---