What is the advantage of polycistronic mRNAs compared to monocistronic mRNAs?

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Polycistronic mRNAs allow for the one transcript to be translated by multiple ribosomes at the same time, thus speeding up translation.

Polycistronic mRNAs have a single Shine-Dalgarno sequence and a single start codon, producing a long polypeptide that is later broken down into many short peptides by post-translational mechanisms.

Polycistronic mRNAs allow for the regulation of the transcription of sets of bacterial genes functioning in the same metabolic pathway.

Polycistronic mRNAs allow for regulation of the transcription of sets of eukaryotic genes functioning in the same metabolic pathway.

 

asked May 15, 2013 in Genetics by GeneX ~Top Expert~ (7,947 points)
    

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Polycistronic mRNAs allow for the regulation of the transcription of sets of bacterial genes functioning in the same metabolic pathway.
answered May 15, 2013 by GeneX ~Top Expert~ (7,947 points)



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