Difference between capping and tailing

CAPPING - Addition of methyl guanosine triphosphate at 5' end.                                                                                      CAPPING - Adenylate residues or poly A tail is added at 3' end
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In capping , an unusual nucleotide , methyl guanosine triphosphate , is added to the 5' - end of hnRNA .


In tailing , adenylate residues ( about 200- 300 )are added at 3'-end in a template independent manner.
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