Glutamate pyruvate transaminase belongs to which of the following categories of enzymes ?

Options

A. Oxidoreductases
B. Hydrolases
C. lyases
D. Transferases

Answer

To determine the category of the enzyme glutamate pyruvate transaminase, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Enzyme**: The enzyme in question is glutamate pyruvate transaminase.

2. **Understand the Function**: This enzyme catalyzes the reaction where L-glutamine and pyruvate are converted into two products: 2-oxo-glutamate and L-alanine.

3. **Recognize the Type of Reaction**: The key aspect of this reaction is that it involves the transfer of an amino group (NH2) from L-glutamine to pyruvate, resulting in the formation of L-alanine and 2-oxo-glutamate.

4. **Categorize the Enzyme**: Enzymes that facilitate the transfer of functional groups, such as amino groups, are classified as transferases. Specifically, glutamate pyruvate transaminase is a type of transaminase, which is a subclass of transferases.

5. **Eliminate Other Options**:
- **Oxidoreductases**: These enzymes catalyze oxidation-reduction reactions, which is not the case here.
- **Hydrolases**: These enzymes use water to break chemical bonds, which is also not applicable to this enzyme.
- **Lyases**: These enzymes catalyze the breaking of bonds by means other than hydrolysis and oxidation, which does not describe the function of glutamate pyruvate transaminase.

6. **Conclusion**: Based on the function and classification of the enzyme, glutamate pyruvate transaminase belongs to the category of **transferases**.

### Final Answer:
**Glutamate pyruvate transaminase belongs to the category of transferases.**

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