| U2-type post-spliceosomal complex |
| nuclear mRNA surveillance of spliceosomal pre-mRNA splicing |
| generation of catalytic spliceosome for second transesterification step |
| nuclear retention of unspliced pre-mRNA at the site of transcription |
| second spliceosomal transesterification activity |
| nuclear retention of pre-mRNA at the site of transcription |
| spliceosomal conformational changes to generate catalytic conformation |
| intracellular mRNA localization |
| nuclear RNA surveillance |
| nuclear mRNA surveillance |
| RNA surveillance |
| U5 snRNP |
| U4/U6 x U5 tri-snRNP complex |
| spliceosomal complex |
| nuclear-transcribed mRNA catabolic process |
| mRNA catabolic process |
| RNA localization |
| ribonucleoprotein complex assembly |
| ribonucleoprotein complex subunit organization |
| RNA catabolic process |
| RNA splicing, via transesterification reactions with bulged adenosine as nucleophile |
| mRNA splicing, via spliceosome |
| RNA splicing, via transesterification reactions |
| nucleobase-containing compound catabolic process |
| RNA splicing |
| nuclear speck |
| heterocycle catabolic process |
| cellular nitrogen compound catabolic process |
| aromatic compound catabolic process |
| ribonucleoprotein complex biogenesis |
| mRNA processing |
| organic cyclic compound catabolic process |
| mRNA metabolic process |
| cellular protein-containing complex assembly |
| RNA processing |
| cellular macromolecule catabolic process |
| macromolecule catabolic process |
| protein-containing complex assembly |
| cellular macromolecule localization |
| RNA metabolic process |
| negative regulation of gene expression |
| organic substance catabolic process |
| cellular catabolic process |
| protein-containing complex subunit organization |
| gene expression |
