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Is mRNA molecule codifies only one type of protein

Is mRNA molecule codifies only one type of the protein?

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Eukaryotic cells enfold monocistronic mRNA, that is, each and every mRNA codifies only one polypeptide chain. Prokaryotes can exist polycistronic mRNA. At the end of assembling of amino acids in a polypeptide chain, the mRNA, through one of its terminal codons, signals to the ribosome which the polypeptide is complete. The ribosome then releases the produced or generates protein. In the prokaryotes after this end of the information for the commencement of the synthesis of another different protein might follow in same mRNA.

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