The Shine-Dalgarno sequence is located on molecules and is important in the initiation of .
Question
The Shine-Dalgarno Sequence
The Shine-Dalgarno sequence is located on mRNA molecules and is important in the initiation of translation.
Solution
The Shine-Dalgarno sequence is located on mRNA (messenger RNA) molecules and is important in the initiation of protein synthesis.
Here are the steps to explain this:
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The Shine-Dalgarno sequence is a ribosomal binding site in bacterial and archaeal messenger RNA, generally located around 8 bases upstream of the start codon AUG.
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The sequence helps recruit the ribosome to the mRNA to initiate protein synthesis by aligning the ribosome with the start codon.
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It does this by pairing with the rRNA (ribosomal RNA) in the small ribosomal subunit. The complementary sequences in the rRNA and the Shine-Dalgarno sequence bind, positioning the ribosome correctly.
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This ensures that the protein synthesis starts at the correct location on the mRNA.
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Once the ribosome is correctly positioned, the protein synthesis can begin with the reading of the first codon. This process continues until a stop codon is reached, and the newly synthesized protein is released.
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