Determine whether the following events occur during initiation, elongation, or termination. This is regarding protein synthesis.

Question

Determine whether the following events occur during initiation, elongation, or termination. This is regarding protein synthesis.

-in E. coli, mRNA binds to the 30S ribosomal subunit

-translocation occurs

-in prokaryotes, the Shine-Dalgarno sequence pairs with rRNA

-initiator tRNA enters the P site

-in E. coli, EF-Tu delivers an aminoacyl-tRNA to the ribosome

-the ribosome has mRNA, an empty A site, and deacylated tRNA in the P site

-in E. coli, EF-Tu hydrolyzes

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Athena 3 months 2022-02-23T09:20:53+00:00 1 Answer 0 views 0

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    2022-02-23T09:22:48+00:00

    Answer:

    The provided events can be classified as:

    Initiation

    • In prokaryotes, the Shine-Dalgarno sequence pairs with rRNA.
    • In E. coli, mRNA binds to the 30S ribosomal subunit.

    Elongation

    • In E. coli, EF-Tu delivers an aminoacyl-tRNA to the ribosome
    • Initiator tRNA enters the P site.
    • In E. coli, EF-Tu hydrolyzes.
    • Translocation occurs

    Termination

    • The ribosome has mRNA, an empty A site, and deacylated tRNA in the P site

    Translation is the process by which polypeptide chain is synthesized based on the codon sequence of the mRNA (messenger ribonucleic acid).

    It is divided into three stages:

    Initiation: The small and large sub-units of the ribosome get assembled around the initiation codon. It forms three sites (A, P, and E site) for interaction tRNA and mRNA.

    Elongation: Specific charged-tRNA enters from A site and transfers its amino acid to the growing polypeptide chain in P site. Uncharged tRNA exit from the E site. Ribosome moves or translocates to the next  codon.

    Termination: As soon as ribosome reaches the termination codon, it releases the newly synthesized polypeptide chain.

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