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What holds the mRNA template in translation?- Transcription factors, initiator tRNA, the large subunit of the...

What holds the mRNA template in translation?-

Transcription factors,

initiator tRNA,

the large subunit of the ribosome,

the small subunit of the ribosome

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Answer #1

the small subunit of the ribosome

When translation begins, the small subunit of the ribosome and an initiator tRNA molecule assemble on the mRNA transcript. The small subunit of the ribosome has three binding sites: an amino acid site (A), a polypeptide site (P), and an exit site (E).When mRNA is made in the nucleus during transcription, it leaves the nucleus through the nuclear pores into the cytoplasm. It then attaches to the ribosome where, the sugar-phosphate backbone is attached to the small unit of the ribosome and two codons are exposed in the bigunit of the ribosome for translation. The small subunit is responsible for the binding and the reading of the mRNA during translation. The small subunit, both the rRNA and its proteins, complexes with the large 50S subunit to form the 70S prokaryotic ribosome in prokaryotic cells. This 70S ribosome is then used to translate mRNA into proteins

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