3' untranslated region

FIGURE 12.04 Splicing Out of the Introns and Maturation of Eukaryotic mRNA—An Overview

The DNA, containing exons and introns, is transcribed to the RNA primary transcript, which contains the RNA version of both introns and exons plus a tail signal. Processing the RNA involves removing the introns, adding a cap and a poly-A tail. Translation of the fused exons forms the protein. B) The cap consists of guanosine triphosphate (attached in the reverse direction) preceding a small untranslated region; the tail consists of a poly-A tract and is preceded by a brief 3' untranslated segment. When translated, only the information from the exons is used to build the protein.

May be methylated NH2

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