organellar chromatophore outer membrane

GO:0070114 · Membrane organelle · Membrane · Proposed

The outer, i.e. cytoplasm-facing, of the two lipid bilayers surrounding an organellar chromatophore. [GO:0070114]

Synonyms: Paulinella-type chromatophore outer membrane

Part of: organellar chromatophore (GO:0070111)

Xrefs: uniprot.location:SL-0361 — Organellar chromatophore outer membrane

Components

Component	Type	Part of / acts on	Grounding	Genes	Stoichiometry	Essential	Role
organellar chromatophore outer lipid bilayer	Lipid	part of	Reviewed label only (reviewed name; no accession asserted)			ESSENTIAL	Cytoplasm-facing lipid bilayer that forms the outer boundary of the organellar chromatophore envelope. `GO:0070114` GO:0070114 defines the organellar chromatophore outer membrane as the cytoplasm-facing lipid bilayer surrounding the organellar chromatophore. `uniprot.location:SL-0361` — Organellar chromatophore outer membrane UniProt Subcellular Location SL-0361 maps directly to GO:0070114 and describes the same outer membrane topology.

NCBITaxon:39716 Paulinella — VARIABLE: UniProt SL-0361 constrains the organellar chromatophore outer membrane to Paulinella species without asserting that every Paulinella species carries this membrane. [uniprot.location:SL-0361 — Organellar chromatophore outer membrane]

The organellar chromatophore outer membrane is the cytoplasm-facing lipid-bilayer boundary of the Paulinella organellar chromatophore envelope.

Subject	Predicate	Object	Evidence
organellar chromatophore outer membrane	bounds	organellar chromatophore	`GO:0070114` GO:0070114 defines this outer membrane by its cytoplasm-facing position around an organellar chromatophore. `uniprot.location:SL-0361` — Organellar chromatophore outer membrane UniProt SL-0361 describes the same cytoplasm-facing organellar chromatophore membrane.

CURATION_TODO (OPEN): Resolve an exact source-neutral grounding for the lipid constituent of the organellar chromatophore outer membrane. The record is exactly grounded to GO:0070114 and UniProt SL-0361, but the lipid bilayer constituent is intentionally left as a reviewed-label-only component until an exact source-neutral lipid or membrane-constituent CURIE is curated.

GO:0070114 Gene Ontology cellular-component term for the organellar chromatophore outer membrane.
GO:0009527 Gene Ontology cellular-component term for plastid outer membrane, the broader parent structure.
GO:0070112 Gene Ontology cellular-component term for organellar chromatophore membrane, the broader chromatophore-membrane parent structure.
GO:0070111 Gene Ontology cellular-component term for the organellar chromatophore that this outer membrane bounds.
uniprot.location:SL-0361 — Organellar chromatophore outer membrane UniProt Subcellular Location entry SL-0361 maps to GO:0070114, places it under plastid outer membrane and organellar chromatophore membrane, and describes its Paulinella-specific taxonomic range.

2026-09-12T17:43:58Z codex · CREATED_RECORD — Scaffolded by scripts/new_record.py
2026-09-12T17:45:26Z codex · EXPANDED_RECORD — Added the GO synonym, UniProt SL xref, plastid outer membrane parentage, organellar chromatophore parthood, a reviewed-label-only outer lipid bilayer component, Paulinella distribution, an outer envelope-boundary function, a nonmechanistic topology graph, and a lipid-grounding TODO.
2026-09-12T18:03:53Z codex · ADDRESS_REVIEW — Resolved #686 by removing the static envelope-boundary pseudo-function; resolved #687 by adding GO:0070112 organellar chromatophore membrane as a second parent with record-level evidence.