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microRNA 203a

From Wikipedia, the free encyclopedia
MIR203A
Identifiers
AliasesMIR203A, MIR203, MIRN203, hsa-mir-203a, miR-203, miRNA203, mir-203a, microRNA 203a
External IDsOMIM: 611899; GeneCards: MIR203A; OMA:MIR203A - orthologs
Orthologs
SpeciesHumanMouse
Entrez
Ensembl
UniProt
RefSeq (mRNA)

n/a

n/a

RefSeq (protein)

n/a

n/a

Location (UCSC)Chr 14: 104.12 – 104.12 Mbn/a
PubMed search[2]n/a
Wikidata
View/Edit Human

MicroRNA 203a is a small RNA that in humans is encoded by the preMIR203A gene. [3]

Function

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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 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. The RefSeq represents the predicted microRNA stem-loop.

References

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  1. ^ a b c GRCh38: Ensembl release 89: ENSG00000207568Ensembl, May 2017
  2. ^ "Human PubMed Reference:". National Center for Biotechnology Information, U.S. National Library of Medicine.
  3. ^ "Entrez Gene: MicroRNA 203a". Retrieved 2017-07-03.

Further reading

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This article incorporates text from the United States National Library of Medicine, which is in the public domain.