Eukaryotes are directed to begin scanning the mRNA for the start codon based on binding of the A) Shine-Dalgarno sequence. B) poly(A) tail and 5 ^' cap. C) Met-tRNA_i^fMet. D) 16S rRNA.

Question

Quizplus · Accepted Answer

Eukaryotes use the 5' cap structure on mRNA to initiate the process of scanning for the start codon, not the Shine-Dalgarno sequence (prokaryotes) or 16S rRNA. The Met-tRNA is involved in the initiation of translation but is not responsible for directing the scanning process.

Eukaryotes Are Directed to Begin Scanning the MRNA for the Start