miRNA Targeting: Growing beyond the Seed

Publication date: Available online 9 January 2019Source: Trends in GeneticsAuthor(s): Laura B. Chipman, Amy E. PasquinellimiRNAs are small RNAs that guide Argonaute proteins to specific target mRNAs to repress their translation and stability. Canonically, miRNA targeting is reliant on base pairing of the seed region, nucleotides 2–7, of the miRNA to sites in mRNA 3′ untranslated regions. Recently, the 3′ half of the miRNA has gained attention for newly appreciated roles in regulating target specificity and regulation. In addition, the extent of pairing to the miRNA 3′ end can influence the stability of the miRNA itself. These findings highlight the importance of sequences beyond the seed in controlling the function and existence of miRNAs.

Source: Trends in Genetics - January 10, 2019 Category: Genetics & Stem Cells Source Type: research