SL snRNP

GO:0071024 · Ribonucleoprotein · Ribonucleoprotein complex · Proposed

A ribonucleoprotein complex that contains spliced leader (SL) RNA and associated proteins. [GO:0071024]

Components

Component	Type	Part of / acts on	Grounding	Genes	Stoichiometry	Essential	Role
spliced leader RNA	Rna	part of	Reviewed label only (reviewed name; no accession asserted)				Spliced leader RNA constituent of the SL snRNP. `GO:0071024` GO:0071024 defines the SL snRNP as containing spliced leader RNA.
SL snRNP-associated proteins	Protein	part of	Reviewed label only (reviewed name; no accession asserted)				Protein constituents associated with the spliced leader RNA in the SL snRNP. `GO:0071024` GO:0071024 defines the SL snRNP as containing associated proteins in addition to spliced leader RNA.

The SL snRNP contains spliced leader RNA together with associated proteins.

Subject	Predicate	Object	Evidence
spliced leader RNA	contributes constituents to	SL snRNP	`GO:0071024` GO:0071024 defines the SL snRNP as containing spliced leader RNA.
SL snRNP-associated proteins	contributes constituents to	SL snRNP	`GO:0071024` GO:0071024 defines the SL snRNP as containing associated proteins.

CURATION_TODO (OPEN): Resolve the exact source-neutral RNA and protein-family boundaries for SL snRNP components. The first GO:0071024 record captures only the GO-defined spliced leader RNA and associated-protein cohorts. Exact RNA terminology and SL snRNP protein-family boundaries should be resolved before expanding the component list.

GO:0071024 Gene Ontology cellular-component term for the SL snRNP.
GO:0097525 Gene Ontology cellular-component parent term for spliceosomal snRNP complex.

2026-09-25T11:11:37Z codex · CREATED_RECORD — Scaffolded by scripts/new_record.py
2026-09-25T11:12:11Z codex · EXPANDED_RECORD — Added spliceosomal snRNP parentage, reviewed-label-only spliced leader RNA and SL snRNP-associated protein components, a conservative constituent graph and a TODO for exact SL snRNP RNA and protein-family boundaries.