small nuclear ribonucleoprotein complex A ribonucleoprotein complex that contains at least one RNA of the small nuclear RNA (snRNA) class and as well as its associated proteins. These are typically named after the snRNA(s) they contain, e.g. U1 snRNP, U4/U6 snRNP, or 7SK snRNP. Many, of these complexes become part of the spliceosome involved in splicing of nuclear mRNAs. Others are involved in regulation of transcription elongation or 3'-end processing of replication-dependent histone pre-mRNAs. small nuclear ribonucleoprotein cellular_component Wikipedia:SnRNP snRNP GO:0030532 Sm-like protein family complex nuclear protein-containing complex ribonucleoprotein complex