Biology:MALAT1-associated small cytoplasmic RNA
| MALAT1-associated small cytoplasmic RNA | |
|---|---|
 Predicted secondary structure and sequence conservation of mascRNA-menRNA | |
| Identifiers | |
| Symbol | mascRNA-menRNA |
| Rfam | RF01684 |
| Other data | |
| RNA type | Gene |
| Domain(s) | Eukaryota |
| GO | 2000147 |
| SO | 0001263 |
| PDB structures | PDBe |
MALAT1-associated small cytoplasmic RNA, also known as mascRNA, is a non-coding RNA found in the cytosol. This is a small RNA, roughly 53–61 nucleotides in length, that is processed from a much longer ncRNA called MALAT1 by an enzyme called RNase P.[1] This RNA is expressed in many different human tissues, is highly conserved by evolution and shares a remarkable similarity to tRNA which is also produced by RNase P, yet this RNA is not aminoacylated in HeLa cells. The primary transcript, MALAT1 (metastasis associated lung adenocarcinoma transcript 1), appears to be upregulated in several malignant cancers.[2] Another small RNA that is homologous to mascRNA, called menRNA, is processed from another long ncRNA called MEN beta.[3]
MALAT1 appears to be involved in the regulation of alternative splicing. MALAT1 interacts with SR proteins, influencing the distribution of these in nuclear speckle domains.[4]
See also
References
- ↑ "3′ end processing of a long nuclear-retained noncoding RNA yields a tRNA-like cytoplasmic RNA.". Cell 135 (5): 919–932. 2008. doi:10.1016/j.cell.2008.10.012. PMID 19041754.
- ↑ "MALAT-1, a novel noncoding RNA, and thymosin beta4 predict metastasis and survival in early-stage non-small cell lung cancer". Oncogene 22 (39): 8031–8041. 2003. doi:10.1038/sj.onc.1206928. PMID 12970751.
- ↑ "MEN epsilon/beta nuclear-retained non-coding RNAs are up-regulated upon muscle differentiation and are essential components of paraspeckles". Genome Res 19 (3): 347–359. 2009. doi:10.1101/gr.087775.108. PMID 19106332.
- ↑ "The Nuclear-Retained Noncoding RNA MALAT1 Regulates Alternative Splicing by Modulating SR Splicing Factor Phosphorylation". Mol Cell 39 (6): 925–938. 2010. doi:10.1016/j.molcel.2010.08.011. PMID 20797886.
Further reading
- "A long nuclear-retained non-coding RNA regulates synaptogenesis by modulating gene expression". EMBO J 29 (18): 3082–3093. 2010. doi:10.1038/emboj.2010.199. PMID 20729808.
- "MALAT-1 enhances cell motility of lung adenocarcinoma cells by influencing the expression of motility-related genes". FEBS Lett 584 (22): 4575–4580. 2010. doi:10.1016/j.febslet.2010.10.008. PMID 20937273.
External links
- OMIM page for MALAT1
- HGNC page for MALAT1
- Page for MALAT1 at Rfam
- Entrez Gene: MALAT1-associated small cytoplasmic RNA
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