spliceosomal snRNP complex

GO:0097525 · Ribonucleoprotein · Ribonucleoprotein complex · Proposed

A small ribonucleoprotein complex involved in formation of the spliceosome. [GO:0097525]

Components

Component	Type	Part of / acts on	Grounding	Genes	Stoichiometry	Essential	Role
snRNA	Rna	part of	`SO:0000274`				Small nuclear RNA constituent of spliceosomal snRNP complexes. `GO:0030532` GO:0030532 defines small nuclear ribonucleoprotein complexes as containing at least one RNA of the small nuclear RNA class. `SO:0000274` SO:0000274 is the Sequence Ontology term for snRNA and lists small nuclear RNA as an exact synonym.
spliceosomal snRNP-associated proteins	Protein	part of	Reviewed label only (reviewed name; no accession asserted)				Protein constituents associated with snRNAs in spliceosomal small nuclear ribonucleoprotein complexes. `GO:0030532` GO:0030532 defines small nuclear ribonucleoprotein complexes as containing associated proteins as well as snRNA. `GO:0097525` GO:0097525 narrows small nuclear ribonucleoprotein complexes to the spliceosomal snRNPs involved in spliceosome formation.

Spliceosomal snRNP complexes are small nuclear ribonucleoproteins built from snRNA and associated proteins.

Subject	Predicate	Object	Evidence
snRNA	contributes constituents to	spliceosomal snRNP complex	`GO:0030532` GO:0030532 defines each snRNP as containing at least one RNA of the snRNA class.
spliceosomal snRNP-associated proteins	contributes constituents to	spliceosomal snRNP complex	`GO:0030532` GO:0030532 defines snRNPs as containing associated proteins.

CURATION_TODO (OPEN): Resolve exact source-neutral RNA and protein boundaries for individual spliceosomal snRNP complexes. The first GO:0097525 record captures only the SO-grounded snRNA class and the associated-protein cohort inherited from the small-nuclear-ribonucleoprotein parent. Individual major and minor spliceosomal snRNP records should resolve specific U-series RNAs, Sm or Lsm rings and snRNP-specific protein family boundaries separately.

GO:0097525 Gene Ontology cellular-component term for spliceosomal snRNP complex.
GO:0030532 Gene Ontology cellular-component parent term for small nuclear ribonucleoprotein complex.
SO:0000274 Sequence Ontology term for snRNA and its small nuclear RNA exact synonym.

2026-09-25T18:17:24Z codex · CREATED_RECORD — Scaffolded by scripts/new_record.py
2026-09-25T18:18:02Z codex · EXPANDED_RECORD — Added small nuclear ribonucleoprotein parentage, a SO-grounded snRNA component, a reviewed-label-only spliceosomal snRNP protein cohort, GO/SO evidence, a nonmechanistic assembly graph and a TODO for exact U-series snRNP component boundaries.