microRNA 19b-1

Symbol

MIR19B1 (may also be known as: None)

Organism

Human

Description

microRNAs (miRNAs) are short (20-24 nt) non-coding RNAs that are involved in post-transcriptional regulation of gene expression in multicellular organisms by affecting both the stability and translation of mRNAs. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs) that can be either protein-coding or non-coding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nt stem-loop precursor miRNA (pre-miRNA), which is further cleaved by the cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into a RNA-induced silencing complex (RISC), which recognizes target mRNAs through imperfect base pairing with the miRNA and most commonly results in translational inhibition or destabilization of the target mRNA. The RefSeq represents the predicted microRNA stem-loop. This miRNA belongs to a polycistronic miRNA cluster that includes six consecutive mature miRNAs that are derived from a single primary transcript. The mature miRNAs of this cluster are often overexpressed in solid cancers. [provided by RefSeq, May 2012]

Links to external resources

Changes associated with this gene

Identifier Name Type Tissues Organism Gene Data Actions
DAA2548 Level of miR-19b decreases with age Molecular T cell Human MIR19B1 63.5% Decrease miRNA Level