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The Shine and Dalgarno is located in ____________

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The Shine and Dalgarno is located in ____________

(a) 5.8S rRNA ~ 20 nucleotide upstream to start site

(b) mRNA ~ 10 nucleotide upstream to start site

(c) 16S rRNA ~ 10 nucleotide upstream to start site

(d) 23S rRNA ~ 10 nucleotide upstream to start site

The question was asked in examination.

I need to ask this question from Ribosome in division Gene Expression : Translation of Cytogenetics

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Correct option is (c) 16S rRNA ~ 10 nucleotide upstream to start site

For explanation: The 16S rRNA forms the smaller subunit which recognizes the mRNA via its Shine and Dalgarno sequence. This is a purine rich sequence about 10 amino acids upstream to translation start site.

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