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Gene: MIR133A1 (microRNA 133a-1) Homo sapiens
Symbol: MIR133A1
Name: microRNA 133a-1
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. [provided by RefSeq, Sep 2009]
Type: ncrna
Also known as: mir-133a-1; MIRN133A1
Mus musculus (house mouse) : Mir133a-1 (microRNA 133a-1)  MGI
Rattus norvegicus (Norway rat) : Mir133a1 (microRNA 133a-1)  Alliance
Canis lupus familiaris (dog) : MIR133A (microRNA mir-133a)
Sus scrofa (pig) : MIR133A-2 (microRNA mir-133a-2)
more info ...
Allele / Splice: See ClinVar data
Latest Assembly: GRCh38 - Human Genome Assembly GRCh38
Human AssemblyChrPosition (strand)SourceGenome Browsers
GRCh38 Ensembl1821,825,698 - 21,825,785 (-)EnsemblGRCh38hg38GRCh38
GRCh381821,825,698 - 21,825,785 (-)NCBIGRCh38GRCh38hg38GRCh38
GRCh371819,405,659 - 19,405,746 (-)NCBIGRCh37GRCh37hg19GRCh37
Build 361817,659,656 - 17,659,743 (-)NCBINCBI36hg18NCBI36
Celera1816,211,722 - 16,211,809 (-)NCBI
Cytogenetic Map18q11.2NCBI
HuRef1816,253,046 - 16,253,133 (-)NCBIHuRef
CHM1_11819,332,764 - 19,332,851 (-)NCBICHM1_1
JBrowse: View Region in Genome Browser (JBrowse)

Disease Annotations
Gene-Chemical Interaction Annotations
References - curated
References - uncurated


Comparative Map Data
Position Markers



Nucleotide Sequences
Clinical Variants

Additional Information

External Database Links
More on MIR133A1
Alliance Gene
Ensembl Gene
JBrowse: hg19 hg38
HGNC Report
NCBI Genome Data Viewer

CRRD Object Information
CRRD ID: 1352770
Created: 2005-03-08
Species: Homo sapiens
Last Modified: 2020-03-10
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.