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Why can’t the 3’ end of pre-mRNA be modified at the same time as the 5’...

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Medical Sciences

Why can’t the 3’ end of pre-mRNA be modified at the same time asthe 5’ cap is place on the other end?

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3.8 Ratings (679 Votes)
The premRNA synthesized in the nucleus has to be transported into the cytoplasm in eukaryotes PremRNA undergoes posttranscriptional processing and forms mature mRNA which then enters the cytoplasm for translation Posttranscriptional processing includes 5 capping 3 polyadenylation and alternative splicing of introns Very early during transcription by RNA pol II a 5 m7G Cap is added    See Answer
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