The Linkage Between the Amino Acid and the TRNA in an Amino-Acyl

Question

The linkage between the amino acid and the tRNA in an amino-acyl tRNA complex is:
A) an amide
B) an acyl phosphate
C) a hydroxylamine
D) an ether
E) an ester

Accepted Answer

The linkage between the amino acid and the tRNA in an amino-acyl tRNA complex is an ester bond. This bond is formed between the carboxyl group of the amino acid and the 3'-hydroxyl group of the adenosine residue at the acceptor stem of tRNA, catalyzed by aminoacyl-tRNA synthetases.