Molecular Basis of Inheritance Question 75

75. During translation initiation in prokaryotes, a GTP molecule is needed in

[2003]

(a) association of $50 S$ subunit of ribosome with initiation complex

(b) formation of formyl-met-tRNA

(c) binding of $30 S$ subunit of ribosome with mRNA

(d) association of $30 S-mRNA$ with formylmet-tRNA

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Answer : a

Hints & Solution

(a) For the formation of initiation complex during translation of $m RNA, GTP$ is also required. The initiator AUG codes for the formylmethionine in prokaryotes.