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In a synergistic model of initiation which of the following factor doesn’t directly lead to initiation?

In a synergistic model of initiation which of the following factor doesn’t directly lead to initiation? Correct Answer Protein X

In a synergistic model of initiation both the poly a tail and the G cap plays a role. So, PAB1 binds to the poly A tail and eIF4E binds to the 5’-G cap with the eIF4G acting as a linker. But protein X plays a role in IRES mode of initiation not this.

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