The bacterial mRNA binds to ribosomes through the
Show Hint
- Shine-Dalgarno sequence
- Kozak sequence
- TATA box
- non-specific sequence
The Correct Option is A
Solution and Explanation
Step 1: Concept
Translation initiation in prokaryotes requires the correct positioning of the ribosome on the mRNA.
Step 2: Meaning
The Shine-Dalgarno (SD) sequence is a purine-rich region located upstream of the AUG start codon.
Step 3: Analysis
The SD sequence base-pairs with a complementary sequence at the 3' end of the 16S rRNA in the small ribosomal subunit (30S). The Kozak sequence is the eukaryotic equivalent, and the TATA box is a transcription promoter element.
Step 4: Conclusion
The Shine-Dalgarno sequence is the specific ribosomal binding site in bacteria. Final Answer: (A)
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