IF1 helps in correct placement of the initiation tRNA. How does it do so?(a) By guiding it to P site(b) By binding to A site(c) By dissociating the ribosomal complex(d) By binding to the P siteI got this question in an international level competition.My question is from Initiation topic in chapter Gene Expression : Translation of Cytogenetics

IF1 helps in correct placement of the initiation tRNA. How does it do

1.	IF1 helps in correct placement of the initiation tRNA. How does it do so?(a) By guiding it to P site(b) By binding to A site(c) By dissociating the ribosomal complex(d) By binding to the P siteI got this question in an international level competition.My question is from Initiation topic in chapter Gene Expression : Translation of Cytogenetics
Answer» Correct choice is (B) By binding to A site Easy explanation: IF1 binds to the A site of the 30S SUBUNIT so that the 1^st aminoacyl-tRNA can’t sit at the A site. It then sits on the P site i.e. correct position.

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