Class I and Class II aminoacyl-tRNA synthetases differ in their
(I)structural motifs.
(II)anticodon recognition.
(III)site of aminoacylation.
(IV)amino acid specificity.
A)I only
B)II,III
C)II,IV
D)II only
E)I,II,III,IV

Question

Quizplus · Accepted Answer

Class I and Class II aminoacyl-tRNA synthetases differ in structural motifs, anticodon recognition, the site of aminoacylation (Class I typically attaches the amino acid to the 2'-OH of the terminal adenosine of the tRNA, while Class II attaches it to the 3'-OH), and they each have specificity for a different set of amino acids, which is determined by their unique structures and recognition sites.

Class I and Class II Aminoacyl-TRNA Synthetases Differ in Their