YRC Logo
PROTEIN SEARCH:
Descriptions Names[Advanced Search]

A spliceosomal complex that is formed by the recruitment of the preassembled U4/U6.U5 tri-snRNP to the prespliceosome. Although all 5 snRNPs are present, the precatalytic spliceosome is catalytically inactive. The precatalytic spliceosome includes many proteins in addition to those found in the U1, U2 and U4/U6.U5 snRNPs. A spliceosomal complex that is formed by the recruitment of the preassembled U4atac/U6atac.U5 tri-snRNP to the U12-type prespliceosome. Although all 5 snRNPs are present, the precatalytic spliceosome is catalytically inactive. The precatalytic spliceosome includes many proteins in addition to those found in the U11, U12 and U4atac/U6atac.U5 snRNPs. A macromolecular complex containing both protein and RNA molecules. Any constituent part of the nucleus, a membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated. Any of a series of ribonucleoprotein complexes that contain RNA and small nuclear ribonucleoproteins (snRNPs), and are formed sequentially during the splicing of a messenger RNA primary transcript to excise an intron. A spliceosomal complex that is formed by the recruitment of a preassembled U5-containing tri-snRNP to the prespliceosome. Although all 5 snRNPs are present, the precatalytic spliceosome is catalytically inactive. The precatalytic spliceosome includes many proteins in addition to those found in the associated snRNPs.

View Gene Ontology (GO) Term

GO TERM SUMMARY

Name: precatalytic spliceosome
Acc: GO:0071011
Aspect: Cellular Component
Desc: A spliceosomal complex that is formed by the recruitment of a preassembled U5-containing tri-snRNP to the prespliceosome. Although all 5 snRNPs are present, the precatalytic spliceosome is catalytically inactive. The precatalytic spliceosome includes many proteins in addition to those found in the associated snRNPs.
Synonyms:
  • mammalian spliceosomal complex B
  • mammalian spliceosomal complex B1
  • yeast spliceosomal complex A2-1
Proteins in PDR annotated with:
   This term: 243 [Search]
   Term or descendants: 243 [Search]


[geneontology.org]
INTERACTIVE GO GRAPH

GO:0071011 - precatalytic spliceosome (interactive image map)

YRC Informatics Platform - Version 3.0
Created and Maintained by: Michael Riffle