A translation repressor activity that acts by base-pairing with an mRNA. The binding can result in targeting the mRNA for degradation or interfering with mRNA translation, hence resulting in posttranscriptional gene silencing. [GOC:BHF, GOC:BHF_miRNA, PMID:18197166, PMID:20533884]
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Collection
C5: Ontology GO: Gene Ontology GO:MF: GO Molecular Function