3' Untranslated Region

**Semantic type:** Nucleotide Sequence

**Definition:** Sequences on the 3' end of messenger RNAs that are not translated into protein. The 3'UTR is involved in many post-transcriptional regulatory pathways, including regulating translation efficiency, mRNA stability, and polyadenylation signals.

**Synonyms:** - 3' UTR - 3'-UTR - 3'UTR