Question

What is the function of the DHU arm (D loop) in the tRNA cloverleaf structure?

Options

• Recognition site for ribosome binding

• Binding site for aminoacyl-tRNA synthetase

• Contains anticodon for mRNA pairing

• Attachment site for amino acids

Answer 1

The DHU arm, also known as the D loop or amino acyl binding loop, serves as the binding site for the enzyme aminoacyl-tRNA synthetase. This interaction is crucial for the proper recognition and charging of the tRNA molecule with its cognate amino acid.