Which of the following E. coli proteins is responsible for advancement of the mRNA during translation?A. EF-G B. IF2
C. IF1
D. EF-Tu
E. None of these.

The correct answer is option A. "EF-G"

Explanation:

As its name implies, the elongation factor (EF-G) of E. coli is one vital protein that participates during the elongation phase of translocation. EF-G catalyzes the GTP-dependent ribosomal translocation step, which allows the ribosome to change from its pre-translocational to the post-translocational state, moving the process from the P to the E site of the ribosome.

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