During translation in bacteria, which of the following factors brings the initiator tRNA to the ribosome P-site and hydrolyzes GTP to allow subunit joining?
Show answer and explanation
Correct answer: IF2
In bacterial translation initiation, initiation factor IF2 (a GTP-binding protein) escorts the initiator tRNA to the P-site; GTP hydrolysis triggers joining of the large ribosomal subunit and start of elongation. This is a key difference in initiation mechanisms of translation.
Keep practicing
More Transcription and Translation questions
- Which of the following statements is TRUE about eukaryotic pre-mRNA but FALSE for prokaryotic mRNA?
- Which RNA polymerase transcribes tRNA and 5S rRNA in eukaryotic cells?
- Why does the third base of a codon often allow “wobble” pairing, reducing the need for a unique tRNA for every codon?
- Which of these processes occur before export of a newly transcribed mRNA from the nucleus in eukaryotes?
- Which statement best explains why translation can begin on a bacterial mRNA even while it is still being transcribed?
- During eukaryotic transcription initiation, which component directly binds the TATA box in the promoter region to help recruit RNA polymera…