The enzyme that catalyses peptide bonding is located in `:`

Options

A. In DHU loop of tRNA
B. Smaller subunit of ribosome
C. Large subunit of ribosome
D. On mRNA

Answer

To solve the question regarding the location of the enzyme that catalyzes peptide bonding, we can follow these steps:

### Step 1: Understand the Question
The question asks for the location of the enzyme responsible for catalyzing peptide bonds, which are crucial in protein synthesis.

### Step 2: Identify the Enzyme
The enzyme that catalyzes the formation of peptide bonds is known as **peptidyl transferase**. This enzyme is essential for linking amino acids together to form proteins.

### Step 3: Analyze the Options
We have four options to consider:
1. DHU loop of tRNA
2. Smaller subunit of ribosome
3. Larger subunit of ribosome
4. On mRNA

### Step 4: Determine the Correct Location
Peptidyl transferase is not found in the DHU loop of tRNA, nor is it located in the smaller subunit of the ribosome or on mRNA. The correct location of peptidyl transferase is in the **larger subunit of the ribosome**. This is where the enzyme facilitates the formation of peptide bonds during protein synthesis.

### Step 5: Select the Correct Answer
Based on the analysis, the correct answer is:
**Option 3: Larger subunit of ribosome.**

### Summary
The enzyme that catalyzes peptide bonding, known as peptidyl transferase, is located in the larger subunit of the ribosome.

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