You are studying the processes of protein synthesis via the use of a cell-free system and synthetic RNAs. You have introduced the following RNA to this system:
5′-AUAUAAUGACUAAAUAU-3′
Table of codons
Aaa lysine
Aau asparagine
ACu threonine
Aua isoleucine
AuG methionine
Uau tyrosine
Cau leucine
Using the above indicated codons, which of the following is the most likely sequence of the peptide synthesized in this system?
A) isoleucine, methionine, threonine, lysine, tyrosine
B) methionine, isoleucine, asparagine
C) methione, threonine, leucine, threonine
D) methionine, threonine, lysine, tyrosine

Question

Quizplus · Accepted Answer

The RNA sequence 5′-AUAUAAUGACUAAAUAU-3′ codes for the amino acid sequence methionine, threonine, lysine, tyrosine.  Translation in eukaryotic cells begins with methionine. Therefore, translation of the synthetic RNA in this study will begin at the first AUG codon encountered and result in the generation of a peptide with the sequence, M-T-K-Y

You Are Studying the Processes of Protein Synthesis Via the Use