spliceosome

A specialized structure that participates in the removal of introns and resplicing of remaining exons of mRNA; in addition to the mRNA primary transcript, at least four small nuclear RNAs (snRNAs) and some proteins are involved. [splice + -some]

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spli·ce·o·some 'splī-sē-ə-.sōm n a ribonucleoprotein complex that is the site in the cell nucleus where introns are excised from precursor messenger RNA and exons are joined together to form functional messenger RNA
spli·ce·o·som·al .splī-sē-ə-'sō-məl adj

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splice·o·some (spliґso-sōm) [Middle Dutch splissen + -some] a large ribonucleoprotein complex, composed of various small nuclear ribonucleoproteins (snRNP) as well as other protein factors, that attaches to specific sites on pre-mRNA and catalyzes splicing out of their introns in the formation of mature mRNA.

Medical dictionary. 2011.

Look at other dictionaries:

  • Spliceosome — Splicéosome Le spliceosome, appelé particule d épissage (en anglais, splicing), est un complexe dynamique de particules ribonucléoprotéiques (composées d ARN et de protéines) et localisé dans le noyau des cellules. Sa fonction est de s associer à …   Wikipédia en Français

  • spliceosome — spliceosome. См. сплайсома. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Spliceosome — A spliceosome is a complex of specialized RNA and protein subunits that removes introns from a transcribed pre mRNA (hnRNA)segment. This process is generally referred to as splicing. CompositionEach spliceosome is composed of five small nuclear… …   Wikipedia

  • Splicéosome — Illustration montrant les exons et les introns d un ARN prémessager et la formation d un ARN mature par épissage. Les UTRs sont des portions non codantes situées aux extrêmités de l ARNm. Le splicéosome, appelé particule d épissage (en anglais,… …   Wikipédia en Français

  • spliceosome — A complex of small nuclear RNA/protein particles (snRNPs ‘snurps’) that participate in hnRNA splicing …   Dictionary of molecular biology

  • spliceosome — splice·o·some (splīsʹə sōm ) n. A nucleoprotein particle that aids in the splicing of messenger RNA in eukaryotes.   [splice + some3.] * * * …   Universalium

  • spliceosome — noun ˈsplaɪsioʊˌsoʊm A dynamic complex of RNA and protein subunits that removes introns from precursor mRNA …   Wiktionary

  • spliceosome — A complex of small nuclear ribonucleoproteins and other proteins that assemble on an immature mRNA and catalyse the excision of an intron. See: splicing …   Glossary of Biotechnology

  • spliceosome — …   Useful english dictionary

  • Splicéosome mineur — Le splicéosome mineur est un complexe ribonucléoprotéique qui catalyse l enlèvement d une classe atypique d introns (dits de type U12) à des ARN pré messagers d eucaryotes comme des plantes, des insectes, des vertébrés et certains champignons… …   Wikipédia en Français

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