esterosome membrane

GO:0033118 · Membrane organelle · Membrane · Proposed

The lipid bilayer surrounding an esterosome. [GO:0033118]

Synonyms: esterosomal membrane

Part of: esterosome (GO:0033117)

Xrefs: uniprot.location:SL-0108 — Esterosome membrane

Components

Component	Type	Part of / acts on	Grounding	Genes	Stoichiometry	Essential	Role
esterosome lipid bilayer	Lipid	part of	Reviewed label only (reviewed name; no accession asserted)			ESSENTIAL	Rough-endoplasmic-reticulum-like lipid bilayer that surrounds the esterosome and encloses the crystal-filled lumen. `GO:0033118` GO:0033118 defines the esterosome membrane as the lipid bilayer surrounding an esterosome. `DOI:10.1083/jcb.110.3.669` Bomblies et al. 1990 used electron microscopy to show that Dictyostelium discoideum esterosome crystals are enclosed by a membrane with rough endoplasmic reticulum characteristics.

NCBITaxon:44689 Dictyostelium discoideum — COMMON: Dictyostelium discoideum aggregation-stage cells form esterosome crystals enclosed by an RER-characteristic membrane. [DOI:10.1083/jcb.110.3.669]

NCBITaxon:44689 Dictyostelium discoideum — Social amoeba model in which esterosome crystals and their rough-ER-like bounding membrane were characterized by electron microscopy. [DOI:10.1083/jcb.110.3.669]

esterosome lumen boundary — The esterosome membrane forms the lipid-bilayer boundary around the crystalline protein-filled esterosome lumen.
- GO:0033118 GO:0033118 defines the esterosome membrane as the lipid bilayer surrounding an esterosome.
- GO:0034467 GO:0034467 defines the esterosome lumen as the volume enclosed by the esterosome membrane.
- DOI:10.1083/jcb.110.3.669 Bomblies et al. 1990 showed that Dictyostelium esterosome crystals are membrane-enclosed.

The esterosome membrane is the lipid bilayer that bounds the esterosome and encloses its crystalline lumen.

Subject	Predicate	Object	Evidence
esterosome membrane	is part of	esterosome	`GO:0033118` GO:0033118 defines the esterosome membrane as the lipid bilayer surrounding an esterosome. `uniprot.location:SL-0108` — Esterosome membrane UniProt SL-0108 places the esterosome membrane under the esterosome subcellular location.
esterosome lumen	is enclosed by	esterosome membrane	`GO:0034467` GO:0034467 defines the esterosome lumen as the volume enclosed by the esterosome membrane. `DOI:10.1083/jcb.110.3.669` Bomblies et al. 1990 showed that Dictyostelium esterosome crystals are membrane-enclosed.

CURATION_TODO (OPEN): Resolve an exact source-neutral grounding for the generic lipid constituent of the esterosome membrane. The record is exactly grounded to GO:0033118, but no esterosome-specific lipid or lipid-bilayer CURIE was curated for the membrane constituent.

GO:0033118 Gene Ontology cellular-component term for the esterosome membrane.
GO:0030659 Gene Ontology cellular-component parent term for cytoplasmic vesicle membrane.
GO:0033117 Gene Ontology cellular-component term for the containing esterosome.
GO:0034467 Gene Ontology cellular-component term for the esterosome lumen bounded by the esterosome membrane.
uniprot.location:SL-0108 — Esterosome membrane UniProt Subcellular Location entry SL-0108 maps directly to GO:0033118, places the esterosome membrane under the esterosome subcellular location, and lists esterosomal membrane as an exact synonym.
DOI:10.1083/jcb.110.3.669 Bomblies et al. 1990, Membrane-enclosed crystals in Dictyostelium discoideum cells, consisting of developmentally regulated proteins with sequence similarities to known esterases, Journal of Cell Biology.

2026-09-13T15:11:09Z codex · CREATED_RECORD — Scaffolded by scripts/new_record.py
2026-09-13T15:11:41Z codex · EXPANDED_RECORD — Added the UniProt SL esterosomal-membrane synonym and xref, cytoplasmic-vesicle-membrane parentage, esterosome parthood, a label-only lipid-bilayer component, Dictyostelium scope, a lumen-boundary function, GO/UniProt/DOI evidence, a nonmechanistic esterosome-membrane topology graph, and a lipid-grounding TODO.