Name 3 post transcriptional modifications of eukaryotic mRNA and briefly explain the purpose of each
The post transcriptional modifications and their purposes are :
1 . Splicing :
Here the introns are removed from the mRNA , and the exons are joined in a specific order. The process removes the non functional portions of primary transcripts.
2. Capping :
Methyl guanosine triphosphate is added to the 5'-end of the hn RNA molecule. This provides stability to the molecule.
3. Tailing :
200-300 residues of adenylate are added to the 3'-end of the molecule . The purpose is to prevent the molecule from enzymatic degradation in the cytoplasm.
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