organellar chromatophore inner membrane

GO:0070113 · Membrane organelle · Membrane · Proposed

The inner, i.e. lumen-facing, of the two lipid bilayers surrounding an organellar chromatophore. [GO:0070113]

Synonyms: Paulinella-type chromatophore inner membrane

Part of: organellar chromatophore (GO:0070111)

Xrefs: uniprot.location:SL-0359 — Organellar chromatophore inner membrane

Components

Component	Type	Part of / acts on	Grounding	Genes	Stoichiometry	Essential	Role
organellar chromatophore inner lipid bilayer	Lipid	part of	Reviewed label only (reviewed name; no accession asserted)			ESSENTIAL	Lumen-facing lipid bilayer that separates the organellar chromatophore stroma from the intermembrane space. `GO:0070113` GO:0070113 defines the organellar chromatophore inner membrane as the lumen-facing lipid bilayer surrounding an organellar chromatophore. `uniprot.location:SL-0359` — Organellar chromatophore inner membrane UniProt Subcellular Location SL-0359 maps directly to GO:0070113 and describes the same inner membrane topology.

NCBITaxon:39716 Paulinella — VARIABLE: UniProt SL-0359 constrains the organellar chromatophore inner membrane to Paulinella species without asserting that every Paulinella species carries this membrane. [uniprot.location:SL-0359 — Organellar chromatophore inner membrane]

The organellar chromatophore inner membrane separates the Paulinella organellar chromatophore stroma from the intermembrane space.

Subject	Predicate	Object	Evidence
organellar chromatophore inner membrane	bounds	organellar chromatophore stroma	`uniprot.location:SL-0359` — Organellar chromatophore inner membrane UniProt SL-0359 defines the organellar chromatophore inner membrane as separating the stroma from the intermembrane space.
organellar chromatophore inner membrane	delimits	organellar chromatophore intermembrane space	`uniprot.location:SL-0359` — Organellar chromatophore inner membrane UniProt SL-0359 defines the organellar chromatophore inner membrane as separating the stroma from the intermembrane space. `GO:0070115` GO:0070115 identifies the organellar chromatophore intermembrane space as the compartment between the inner and outer organellar chromatophore membranes.

CURATION_TODO (OPEN): Resolve an exact source-neutral grounding for the lipid constituent of the organellar chromatophore inner membrane. The record is exactly grounded to GO:0070113 and UniProt SL-0359, 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:0070113 Gene Ontology cellular-component term for the organellar chromatophore inner membrane.
GO:0009528 Gene Ontology cellular-component term for plastid inner membrane.
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 inner membrane is part of.
uniprot.location:SL-0359 — Organellar chromatophore inner membrane UniProt Subcellular Location entry SL-0359 maps to GO:0070113, places it under plastid inner membrane and organellar chromatophore membrane, and describes its Paulinella-specific taxonomic range.
GO:0070115 Gene Ontology cellular-component term for the intermembrane space that lies between the inner and outer organellar chromatophore membranes.

2026-09-12T18:20:26Z codex · CREATED_RECORD — Scaffolded by scripts/new_record.py
2026-09-12T18:20:57Z codex · EXPANDED_RECORD — Added the GO synonym, UniProt SL xref, plastid inner membrane and organellar chromatophore membrane parentage, organellar chromatophore parthood, a reviewed-label-only inner lipid bilayer component, Paulinella distribution, a nonmechanistic topology graph, and a lipid-grounding TODO.
2026-09-12T18:31:04Z codex · ADDRESS_REVIEW — Resolved #690 by retargeting the topology graph from a whole-chromatophore bounds edge to a stroma/intermembrane-space separation edge with explicit compartment nodes and evidence.
2026-09-12T18:31:33Z codex · ADDRESS_REVIEW — Refined the #690 topology fix by splitting the stroma/intermembrane-space separation into explicit stroma-facing and intermembrane-space edges.
2026-09-12T18:32:48Z codex · FIX_CURIE — Removed the unresolved uniprot.location:SL-0353 grounding and evidence introduced while addressing #690; kept the ungrounded stroma topology node and GO:0070115 intermembrane-space grounding.
2026-09-20T21:58:46Z codex · ADDRESSED_REVIEW — Retyped the organellar chromatophore intermembrane-space graph node as CELLULAR_LOCALIZATION.