Ile-TRNA Synthetase

question 70

Multiple Choice

Ile-tRNA synthetase:

• A) has an acylation site that rejects amino acids that are smaller than the correct one.
• B) has a hydrolytic site that destroys activated intermediates that are larger than the correct species.
• C) has no proofreading ability.
• D) is unable to incorporate valine or leucine into aminoacylated tRNA structures.
• E) catalyzes aminoacylation of tRNA whereby the carboxyl group of an amino acid is joined to the 3´-OH of a tRNA.

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