CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

What are the three post transcriptional modifications?


Open in App
Solution

Post-transcriptional modification:

  1. RNA is formed from DNA by the process of transcription.
  2. The step involved in protein biosynthesis is a post-translational modification (PTM).
  3. There is the generation of proteins when polypeptide chains are formed from the ribosomes' mRNA.

The three post-transcriptional modifications are as follows:

  1. Splicing: This involves the removal of the part of the gene that does not code for any protein (introns) and joining all the coding genes (exons) to form a functional gene.
  2. Capping: This involves the addition of nucleotide methylguanosine triphosphate to the 5'-phosphate end of the mRNA. It guides the mRNA safely to the cytoplasm upon its exit from the nucleus.
  3. Tailing: This involves the addition of poly-adenosine residues to the 3'-end of the mRNA.

flag
Suggest Corrections
thumbs-up
52
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Nucleus
BIOLOGY
Watch in App
Join BYJU'S Learning Program
CrossIcon