Ribonucleoprotein, U2 Small Nuclear

**Definition:** A nuclear RNA-protein complex that plays a role in RNA processing. In the nucleoplasm, the U2 snRNP along with other small nuclear ribonucleoproteins (U1, U4-U6, and U5) assemble into SPLICEOSOMES that remove introns from pre-mRNA by splicing. The U2 snRNA forms base pairs with conserved sequence motifs at the branch point, which associates with a heat- and RNAase-sensitive factor in an early step of splicing.

**Tree numbers:** - D12.776.157.725.500.875.605 - D12.776.157.725.829.344 - D12.776.664.962.500.875.605 - D12.776.664.962.829.344

**Synonyms:** - Small Nuclear Ribonucleoproteins, U2 - U2 Small Nuclear Ribonucleoproteins - U2 snRNP - Ribonucleoproteins, Small, U2