Golgi apparatus

GO:0005794 · Membrane organelle · Membrane bounded organelle · Proposed

A membrane-bound cytoplasmic organelle of the endomembrane system that further processes the core oligosaccharides (e.g. N-glycans) added to proteins in the endoplasmic reticulum and packages them into membrane-bound vesicles. The Golgi apparatus operates at the intersection of the secretory, lysosomal, and endocytic pathways. [GO:0005794]

Synonyms: Golgi complex

Part of: GO:0012505 — endomembrane system (no local record)

Has part: Golgi membrane (GO:0000139); Golgi cisterna (GO:0031985)

UniProt location names: UniProt Consortium, CC BY 4.0. Reference label and route sources.

Components

Component	Type	Part of / acts on	Grounding	Genes	Stoichiometry	Essential	Role
Golgi glycosylation enzymes	Protein	acts on	Reviewed label only (reviewed name; no accession asserted)			UNKNOWN	Resident enzymes that remodel glycan cargo as it passes through Golgi cisternae. `DOI:10.1016/j.ceb.2014.04.010` Papanikou and Glick 2014 review how Golgi cisternae maintain processing-enzyme cohorts.
Golgi SNARE trafficking machinery	Protein	acts on	Reviewed label only (reviewed name; no accession asserted)			UNKNOWN	Membrane-fusion machinery that helps organize vesicular traffic to and from Golgi cisternae. `DOI:10.1016/j.ceb.2014.04.010` Papanikou and Glick 2014 review Golgi identity as depending on vesicle capture and fusion machinery, including SNARE pairing.

Taxonomic distribution

NCBITaxon:4932 Saccharomyces cerevisiae — COMMON: Live-cell imaging in budding yeast directly resolved maturing Golgi cisternae. [DOI:10.1038/nature04717]

Canonical examples

NCBITaxon:4932 Saccharomyces cerevisiae — Budding yeast model in which Golgi cisternal maturation was visualized with fluorescent cisternal markers. [DOI:10.1038/nature04737]

Functions

glycan processing and secretory sorting — The Golgi apparatus processes glycoprotein oligosaccharides and sorts membrane-bound cargo within the secretory, endocytic and lysosomal trafficking network.
- GO:0005794 GO:0005794 defines the Golgi apparatus as the endomembrane organelle that processes ER-derived core oligosaccharides and packages cargo into membrane-bound vesicles.
- DOI:10.1016/j.ceb.2014.04.010 Papanikou and Glick 2014 review Golgi compartment identities and resident enzyme organization.
cisternal maturation — In budding yeast, individual Golgi cisternae mature from early to late cisternae while resident markers arrive and depart over time.
- DOI:10.1038/nature04717 Losev et al. 2006 visualized Golgi maturation dynamics in living Saccharomyces cerevisiae.
- DOI:10.1038/nature04737 Matsuura-Tokita et al. 2006 used live imaging to follow yeast Golgi cisternal maturation.

Mechanism graphs

Yeast Golgi cisternae mature over time (FUNCTION)

Live imaging of Saccharomyces cerevisiae showed that Golgi cisternae change resident marker composition as they mature from early to late compartments.

Subject	Predicate	Object	Evidence
Golgi membrane	bounds	Golgi cisterna	`GO:0000139` GO:0000139 defines the Golgi membrane as the lipid bilayer around Golgi apparatus compartments.
Golgi cisterna	is part of	Golgi apparatus	`DOI:10.1038/nature04717` Losev et al. 2006 tracked individual Golgi cisternae in living yeast.
Golgi SNARE trafficking machinery	supports	early-to-late cisternal maturation	`DOI:10.1016/j.ceb.2014.04.010` Papanikou and Glick 2014 review SNARE cycling as part of the mechanism that maintains Golgi compartment identity.
Golgi cisterna	undergoes	early-to-late cisternal maturation	`DOI:10.1038/nature04737` Matsuura-Tokita et al. 2006 visualized yeast Golgi cisternal maturation in living cells.
Golgi glycosylation enzymes	reside in	Golgi apparatus	`DOI:10.1016/j.ceb.2014.04.010` Papanikou and Glick 2014 review the organization of Golgi resident enzymes by compartment identity.

Discussions

CURATION_TODO (OPEN): Resolve exact source-neutral family groundings for Golgi SNARE trafficking proteins and resident glycosylation enzymes, or split the grouped cohorts where exact family terms exist. This first Golgi apparatus record avoids broad SNARE or glycosyltransferase domain groundings that would overclaim exact identity for Golgi-specific protein cohorts.

Evidence

GO:0005794 Gene Ontology cellular-component term for Golgi apparatus.
DOI:10.1038/nature04717 Losev et al. 2006, 'Golgi maturation visualized in living yeast', Nature.
DOI:10.1038/nature04737 Matsuura-Tokita et al. 2006, 'Live imaging of yeast Golgi cisternal maturation', Nature.
DOI:10.1016/j.ceb.2014.04.010 Papanikou and Glick 2014, 'Golgi compartmentation and identity', Current Opinion in Cell Biology.

Curation history

2026-09-11T16:46:43Z codex · CREATED_RECORD — Scaffolded by scripts/new_record.py
2026-09-11T16:47:33Z codex · EXPANDED_RECORD — Added Golgi parentage, endomembrane parthood, Golgi membrane parthood, exact synonymy, reviewed-label-only Golgi enzyme and SNARE cohorts, Saccharomyces scope, glycan-processing and cisternal-maturation functions, a nonmechanistic cisternal maturation graph, and a machinery-grounding TODO.
2026-09-11T16:51:50Z codex · ADDRESSED_REVIEW_ISSUE — Addressed review issue #522 by adding GO:0031985 Golgi cisterna as a curated Golgi apparatus part and grounding the Golgi cisterna graph node.

Source: data/structures/membrane_organelle/golgi_apparatus.yaml