FB2026_03 , released September 17, 2026
FB2026_03 , released September 17, 2026
CV Term Report
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General Information
Term spliceosomal complex ID (Ontology) GO:0005681 (Gene Ontology)
Definition Any of a series of ribonucleoprotein complexes that contain snRNA(s) and small nuclear ribonucleoproteins (snRNPs), and are formed sequentially during the spliceosomal splicing of one or more substrate RNAs, and which also contain the RNA substrate(s) from the initial target RNAs of splicing, the splicing intermediate RNA(s), to the final RNA products. During cis-splicing, the initial target RNA is a single, contiguous RNA transcript, whether mRNA, snoRNA, etc., and the released products are a spliced RNA and an excised intron, generally as a lariat structure. During trans-splicing, there are two initial substrate RNAs, the spliced leader RNA and a pre-mRNA.[ ISBN:0198547684 PubMed:19239890 ]
Also Known As "spliceosome complex"
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Data ClassFieldDirect annotations
Genes (FBgn)GO_CELLULAR_COMPONENT
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Relevant FlyBase reports
 Alleles Gene Groups Genes
 spliceosomal complex (all annotations which use CV term, excluding "NOT" statements)       --
     part_of | spliceosomal complex       --       --
     spliceosomal complex | germline clone
      --       --
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nucleus
 |__nuclear protein-containing complex__
protein-containing complex              |
 |__nuclear protein-containing complex__|
 |__ribonucleoprotein complex___________|
                                        spliceosomal complex  200 rec.
                                         |__catalytic step 1 spliceosome 3 rec.
                                         |   |__U2-type catalytic step 1 spliceosome 3 rec.
                                         |   |__U12-type catalytic step 1 spliceosome
                                         |__catalytic step 2 spliceosome 124 rec.
                                         |   |__U2-type catalytic step 2 spliceosome 6 rec.
                                         |   |__U12-type catalytic step 2 spliceosome
                                         |__post-mRNA release spliceosomal complex 11 rec.
                                         |   |__U2-type post-mRNA release spliceosomal complex 2 rec.
                                         |   |__U12-type post-mRNA release spliceosomal complex
                                         |__post-spliceosomal complex 3 rec.
                                         |   |__U2-type post-spliceosomal complex 2 rec.
                                         |   |__U12-type post-spliceosomal complex
                                         |__precatalytic spliceosome 141 rec.
                                         |   |__U2-type precatalytic spliceosome 1 rec.
                                         |   |__U12-type precatalytic spliceosome
                                         |__prespliceosome 15 rec.
                                         |   |__U2-type prespliceosome 15 rec.
                                         |   |__U12-type prespliceosome
                                         |__supraspliceosomal complex
                                         |__trans spliceosomal complex
                                         |__U2-type spliceosomal complex 39 rec.
                                         |   |__commitment complex 5 rec.
                                         |   |__U2-type catalytic step 1 spliceosome 3 rec.
                                         |   |__U2-type catalytic step 2 spliceosome 6 rec.
                                         |   |__U2-type post-mRNA release spliceosomal complex 2 rec.
                                         |   |__U2-type post-spliceosomal complex 2 rec.
                                         |   |__U2-type precatalytic spliceosome 1 rec.
                                         |   |__U2-type prespliceosome 15 rec.
                                         |__U12-type spliceosomal complex 14 rec.
                                             |__U12-type catalytic step 1 spliceosome
                                             |__U12-type catalytic step 2 spliceosome
                                             |__U12-type post-mRNA release spliceosomal complex
                                             |__U12-type post-spliceosomal complex
                                             |__U12-type precatalytic spliceosome
                                             |__U12-type prespliceosome
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Is a nuclear protein-containing complex
ribonucleoprotein complex
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Synonyms
  • "spliceosome" BROAD
    "spliceosome complex" EXACT
Secondary IDs
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Wikipedia:Spliceosome