Pseudouridine
| Pseudouridine | |
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5-[(2S,3R,4S,5R)-3,4-Dihydroxy-5-(hydroxymethyl)-oxolan-2-yl]-1H-pyrimidine-2,4-dione |
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5-(β-D-ribofuranosyl)pyrimidine-2,4(1H,3H)-dione |
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Other names
psi-Uridine, 5-Ribosyluracil, beta-D-Pseudouridine, 5-(beta-D-Ribofuranosyl)uracil |
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| Identifiers | |
| CAS number | 1445-07-4  |
| PubChem | 15047 |
| ChemSpider | 14319 |
| ChEBI | CHEBI:17802 |
| Jmol-3D images | Image 1 |
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| Properties | |
| Molecular formula | C9H12N2O6 |
| Molar mass | 244.20 g/mol |
| Appearance | White granular powder |
| Solubility in water | Highly soluble in water. |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Pseudouridine (abbreviated by the Greek letter psi- Ψ) is the C-glycoside isomer of the nucleoside uridine, and it is the most prevalent of the over one hundred different modified nucleosides found in RNA.[1] Ψ is found in all species and in many classes of RNA except mRNA.[2][3] Ψ is formed by enzymes called Ψ synthases, which post-transcriptionally isomerize specific uridine residues in RNA in a process termed pseudouridylation.[4]
Recent studies suggest it may offer protection from radiation.[5]
It is commonly found in tRNA, associated with thymidine and cytosine in the TΨC arm and is one of the invariant regions of tRNA.The function of it is not very clear, but it is expected to play a role in association with aminoacyl transferases during their interaction with tRNA, and hence in the initiation of translation.
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Pseudouridine is biosynthesized from uridine via the action of Ψ synthases.
[edit] See also
[edit] References
- ^ Hamma T, Ferré-D'Amaré AR (2006). "Pseudouridine synthases". Chem. Biol. 13 (11): 1125–1135. doi:10.1016/j.chembiol.2006.09.009. PMID 17113994.
- ^ Charette M, Gray MW (2000). "Pseudouridine in RNA: what, where, how, and why". IUBMB Life 49 (5): 341–351. doi:10.1080/152165400410182. PMID 10902565.
- ^ Liang XH, Xu YX, MIchaeli S (2002). "The spliced leader-associated RNA is a trypanosome-specific sn(o) RNA that has the potential to guide pseudouridine formation on the SL RNA". RNA 8 (2): 237–246. doi:10.1017/S1355838202018290. PMC 1370245. PMID 11911368. http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pmcentrez&artid=1370245.
- ^ Ferré-D'Amaré AR (2003). "RNA-modifying enzymes". Curr. Opin. Struct. Biol. 13 (1): 49–55. doi:10.1016/S0959-440X(02)00002-7. PMID 12581659.
- ^ Monobe, Manami; Arimoto-Kobayashi, Sakae; Ando, Koichi (2003). "β-Pseudouridine, a beer component, reduces radiation-induced chromosome aberrations in human lymphocytes". Mutation research. Genetic toxicology and environmental mutagenesis 538 (1–2): 93–99. doi:10.1016/S1383-5718(03)00094-9. PMID 12834758. http://cat.inist.fr/?aModele=afficheN&cpsidt=14885511.
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