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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 siteThe question was asked in examination.I need to ask this question from Ribosome in division Gene Expression : Translation of Cytogenetics

Answer»

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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