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Which poly a tail binding protein helps in the initiation of translation?

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Which poly a tail binding protein helps in the initiation of translation?

(a) CPSF

(b) PAP

(c) PABP1

(d) PABP2

This question was posed to me during a job interview.

My question is based upon Initiation topic in chapter Gene Expression : Translation of Cytogenetics

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The correct option is (d) PABP2

Explanation: PABP2 can bind the poly a tail to the eIF4E through the mediator eIF4G. This increases the association of the 40S subunit to the 5’ end of the mRNA thus increasing translation.

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