MicroRNAs (miRNAs) are short (20–24 nucleotides) noncoding RNAs that participate in post-transcriptional regulation of gene expression in multicellular organisms by affecting mRNA stability and translation. miRNAs are transcribed by RNA polymerase II as part of capped and polyadenylated primary transcripts (pri-miRNAs), which can be protein-coding or noncoding. The primary transcript is cleaved by the Drosha ribonuclease III enzyme to produce an approximately 70-nucleotide stem-loop precursor miRNA (pre-miRNA), which is further cleaved by cytoplasmic Dicer ribonuclease to generate the mature miRNA and antisense miRNA star (miRNA*) products. The mature miRNA is incorporated into an 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. RefSeq represents a predicted microRNA stem-loop. [Provided by RefSeq, Sep 2009]
Subcellular localization of MIR133A1 (and its protein):
Gene Ontology (GO) terms for MIR133A1:
| Disease | Score | NofPmids | NofSnps | Source |
| Parkinson Disease | 0.002367032 | 1 | 0 | GAD |
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