How Does the Eukaryotic Initiation Complex Locate the True Start

question 14

Multiple Choice

How does the eukaryotic initiation complex locate the true start codon?

• A)The true start codon is the first ATG encountered downstream of the Shine-Dalgarno sequence.
• B)The initiation complex moves the small ribosomal subunit through the 5′ UTR, scanning for the start AUG.
• C)The preinitiation complex moves the ribosome through the 3′ UTR, scanning for the Kozak sequence.
• D)The true start codon is the first ATG encountered downstream of the Kozak sequence.
• E)The true start codon is the formyl-ATG, which will encode for fMet in the protein.

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