definition
type: AnnotationProperty

imported from
type: AnnotationProperty

has_alternative_id
type: AnnotationProperty

has_broad_synonym
type: AnnotationProperty

database_cross_reference
type: AnnotationProperty

has_exact_synonym
type: AnnotationProperty

has_narrow_synonym
type: AnnotationProperty

has_obo_namespace
type: AnnotationProperty

has_related_synonym
type: AnnotationProperty

in_subset
type: AnnotationProperty

Golgi membrane
type: Class
subclass of: organelle membrane
subclass of: Golgi apparatus part
id: GO:0000139
definition: The lipid bilayer surrounding any of the compartments of the Golgi apparatus.
has_obo_namespace: cellular_component
imported from: go.owl

chromosome, centromeric region
type: Class
subclass of: intracellular organelle part
id: GO:0000775
comment: Note that this term can be used in place of the obsolete cellular component term 'centromere ; GO:0005698'. Use with caution because this term refers to a specific region of the chromosome and not a protein complex.
definition: The region of a chromosome that includes the centromeric DNA and associated proteins. In monocentric chromosomes, this region corresponds to a single area of the chromosome, whereas in holocentric chromosomes, it is evenly distributed along the chromosome.
has_obo_namespace: cellular_component
has_related_synonym: centromere
has_exact_synonym: chromosome, centric region
has_related_synonym: chromosome, pericentric region
imported from: go.owl

cellular_component
type: Class
id: GO:0005575
has_alternative_id: GO:0008372
database_cross_reference: NIF_Subcellular:sao1337158144
comment: Note that, in addition to forming the root of the cellular component ontology, this term is recommended for use for the annotation of gene products whose cellular component is unknown. Note that when this term is used for annotation, it indicates that no information was available about the cellular component of the gene product annotated as of the date the annotation was made; the evidence code ND, no data, is used to indicate this.
definition: The part of a cell or its extracellular environment in which a gene product is located. A gene product may be located in one or more parts of a cell and its location may be as specific as a particular macromolecular complex, that is, a stable, persistent association of macromolecules that function together.
has_exact_synonym: cellular component
has_narrow_synonym: cellular component unknown
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: goslim aspergillus
in_subset: goslim candida
in_subset: goslim generic
in_subset: goslim metagenomics
in_subset: goslim pir
in_subset: goslim plant
in_subset: goslim yeast
in_subset: gosubset prok

extracellular region
type: Class
subclass of: cellular_component
id: GO:0005576
comment: Note that this term is intended to annotate gene products that are not attached to the cell surface. For gene products from multicellular organisms which are secreted from a cell but retained within the organism (i.e. released into the interstitial fluid or blood), consider the cellular component term 'extracellular space ; GO:0005615'.
definition: The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.
database_cross_reference: Wikipedia:Extracellular
has_obo_namespace: cellular_component
has_exact_synonym: extracellular
imported from: go.owl
in_subset: goslim aspergillus
in_subset: goslim candida
in_subset: goslim generic
in_subset: goslim pir
in_subset: goslim plant
in_subset: goslim yeast
in_subset: gosubset prok

nuclear envelope
type: Class
subclass of: organelle envelope
subclass of: nuclear part
id: GO:0005635
has_alternative_id: GO:0005636
definition: The double lipid bilayer enclosing the nucleus and separating its contents from the rest of the cytoplasm; includes the intermembrane space, a gap of width 20-40 nm (also called the perinuclear space).
database_cross_reference: Wikipedia:Nuclear_envelope
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: goslim generic
in_subset: goslim plant

nucleoplasm
type: Class
subclass of: nuclear part
id: GO:0005654
database_cross_reference: NIF_Subcellular:sao661522542
definition: That part of the nuclear content other than the chromosomes or the nucleolus.
database_cross_reference: Wikipedia:Nucleoplasm
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: goslim generic
in_subset: goslim plant

chromosome
type: Class
subclass of: intracellular non-membrane-bounded organelle
definition: A structure composed of a very long molecule of DNA and associated proteins (e.g. histones) that carries hereditary information.
id: GO:0005694
database_cross_reference: Wikipedia:Chromosome
has_obo_namespace: cellular_component
has_related_synonym: chromatid
has_narrow_synonym: interphase chromosome
has_narrow_synonym: prophase chromosome
imported from: go.owl
in_subset: goslim aspergillus
in_subset: goslim candida
in_subset: goslim generic
in_subset: goslim metagenomics
in_subset: goslim pir
in_subset: goslim yeast
in_subset: gosubset prok

mitochondrial outer membrane
type: Class
subclass of: mitochondrial membrane
subclass of: organelle outer membrane
id: GO:0005741
database_cross_reference: NIF_Subcellular:sao1289741256
definition: The outer, i.e. cytoplasm-facing, lipid bilayer of the mitochondrial envelope.
database_cross_reference: Wikipedia:Outer_mitochondrial_membrane
has_obo_namespace: cellular_component
has_exact_synonym: outer mitochondrial membrane
imported from: go.owl

mitochondrial inner membrane
type: Class
subclass of: organelle inner membrane
subclass of: mitochondrial membrane
id: GO:0005743
database_cross_reference: NIF_Subcellular:sao1371347282
definition: The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae.
database_cross_reference: Wikipedia:Inner_mitochondrial_membrane
has_obo_namespace: cellular_component
has_exact_synonym: inner mitochondrial membrane
imported from: go.owl

mitochondrial intermembrane space
type: Class
subclass of: organelle envelope lumen
subclass of: mitochondrial part
id: GO:0005758
has_alternative_id: GO:0031971
database_cross_reference: NIF_Subcellular:sao118944228
definition: The region between the inner and outer lipid bilayers of the mitochondrial envelope.
has_obo_namespace: cellular_component
has_exact_synonym: mitochondrial envelope lumen
has_related_synonym: mitochondrial membrane lumen
imported from: go.owl

mitochondrial matrix
type: Class
subclass of: mitochondrial part
subclass of: intracellular organelle lumen
id: GO:0005759
has_alternative_id: GO:0031980
database_cross_reference: NIF_Subcellular:sao-1899375636
database_cross_reference: NIF_Subcellular:sao1804523077
definition: The gel-like material, with considerable fine structure, that lies in the matrix space, or lumen, of a mitochondrion. It contains the enzymes of the tricarboxylic acid cycle and, in some organisms, the enzymes concerned with fatty acid oxidation.
database_cross_reference: Wikipedia:Mitochondrial_matrix
has_obo_namespace: cellular_component
has_exact_synonym: mitochondrial lumen
has_narrow_synonym: mitochondrial stroma
imported from: go.owl

lysosomal membrane
type: Class
subclass of: vacuolar membrane
id: GO:0005765
definition: The lipid bilayer surrounding the lysosome and separating its contents from the cell cytoplasm.
has_obo_namespace: cellular_component
imported from: go.owl

endosome
type: Class
subclass of: intracellular membrane-bounded organelle
subclass of: cytoplasmic part
definition: A membrane-bounded organelle to which materials ingested by endocytosis are delivered.
id: GO:0005768
database_cross_reference: NIF_Subcellular:sao1720343330
database_cross_reference: Wikipedia:Endosome
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: goslim generic
in_subset: goslim pir
in_subset: goslim plant

vacuole
type: Class
subclass of: intracellular membrane-bounded organelle
subclass of: cytoplasmic part
definition: A closed structure, found only in eukaryotic cells, that is completely surrounded by unit membrane and contains liquid material. Cells contain one or several vacuoles, that may have different functions from each other. Vacuoles have a diverse array of functions. They can act as a storage organelle for nutrients or waste products, as a degradative compartment, as a cost-effective way of increasing cell size, and as a homeostatic regulator controlling both turgor pressure and pH of the cytosol.
id: GO:0005773
database_cross_reference: Wikipedia:Vacuole
has_obo_namespace: cellular_component
has_related_synonym: vacuolar carboxypeptidase Y
imported from: go.owl
in_subset: goslim aspergillus
in_subset: goslim candida
in_subset: goslim generic
in_subset: goslim metagenomics
in_subset: goslim pir
in_subset: goslim plant
in_subset: goslim yeast
in_subset: gosubset prok

vacuolar membrane
type: Class
subclass of: organelle membrane
subclass of: vacuolar part
id: GO:0005774
definition: The lipid bilayer surrounding the vacuole and separating its contents from the cytoplasm of the cell.
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok

vacuolar lumen
type: Class
subclass of: vacuolar part
subclass of: intracellular organelle lumen
id: GO:0005775
definition: The volume enclosed within the vacuolar membrane.
has_obo_namespace: cellular_component
imported from: go.owl

peroxisomal membrane
type: Class
subclass of: microbody membrane
subclass of: peroxisomal part
id: GO:0005778
definition: The lipid bilayer surrounding a peroxisome.
has_obo_namespace: cellular_component
has_exact_synonym: peroxisome membrane
imported from: go.owl

peroxisomal matrix
type: Class
subclass of: microbody lumen
subclass of: peroxisomal part
id: GO:0005782
has_alternative_id: GO:0031909
definition: The volume contained within the membranes of a peroxisome; in many cells the matrix contains a crystalloid core largely composed of urate oxidase.
has_obo_namespace: cellular_component
has_exact_synonym: peroxisomal lumen
imported from: go.owl

endoplasmic reticulum lumen
type: Class
subclass of: endoplasmic reticulum part
subclass of: intracellular organelle lumen
has_exact_synonym: ER cisterna
has_exact_synonym: ER lumen
id: GO:0005788
has_alternative_id: GO:0016022
definition: The volume enclosed by the membranes of the endoplasmic reticulum.
has_obo_namespace: cellular_component
has_exact_synonym: cisternal lumen
has_exact_synonym: endoplasmic reticulum cisterna
imported from: go.owl

endoplasmic reticulum membrane
type: Class
subclass of: organelle membrane
subclass of: membrane part
subclass of: endoplasmic reticulum part
has_exact_synonym: ER membrane
id: GO:0005789
definition: The lipid bilayer surrounding the endoplasmic reticulum.
has_obo_namespace: cellular_component
imported from: go.owl

endoplasmic reticulum-Golgi intermediate compartment
type: Class
subclass of: intracellular membrane-bounded organelle
subclass of: cytoplasmic part
definition: A complex system of membrane-bounded compartments located between endoplasmic reticulum (ER) and the Golgi complex, with a distinctive membrane protein composition; involved in ER-to-Golgi transport.
has_exact_synonym: ER-Golgi intermediate compartment
has_exact_synonym: ERGIC
id: GO:0005793
database_cross_reference: Wikipedia:Vesicular-tubular_cluster
has_obo_namespace: cellular_component
has_exact_synonym: pre-Golgi intermediate compartment
has_exact_synonym: vesicular-tubular cluster
imported from: go.owl

Golgi lumen
type: Class
subclass of: Golgi apparatus part
subclass of: intracellular organelle lumen
id: GO:0005796
definition: The volume enclosed by the membranes of any cisterna or subcompartment of the Golgi apparatus, including the cis- and trans-Golgi networks.
has_obo_namespace: cellular_component
imported from: go.owl

lipid particle
type: Class
subclass of: cytoplasmic part
definition: Any particle of coalesced lipids in the cytoplasm of a cell. May include associated proteins.
id: GO:0005811
comment: Note that this term does not refer to vesicles, but instead to structures in which lipids do not necessarily form bilayers.
has_exact_synonym: adiposome
has_obo_namespace: cellular_component
has_exact_synonym: lipid body
has_exact_synonym: lipid droplet
imported from: go.owl
in_subset: goslim generic

cytosol
type: Class
subclass of: cytoplasmic part
id: GO:0005829
database_cross_reference: NIF_Subcellular:sao101633890
definition: The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
database_cross_reference: Wikipedia:Cytosol
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: goslim aspergillus
in_subset: goslim generic
in_subset: goslim plant
in_subset: gosubset prok

plasma membrane
type: Class
subclass of: membrane
subclass of: cell part
id: GO:0005886
has_alternative_id: GO:0005904
database_cross_reference: NIF_Subcellular:sao1663586795
definition: The membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
database_cross_reference: Wikipedia:Cell_membrane
has_narrow_synonym: bacterial inner membrane
has_exact_synonym: cell membrane
has_obo_namespace: cellular_component
has_exact_synonym: cytoplasmic membrane
has_narrow_synonym: inner endospore membrane
has_broad_synonym: juxtamembrane
has_narrow_synonym: plasma membrane lipid bilayer
has_exact_synonym: plasmalemma
imported from: go.owl
in_subset: goslim aspergillus
in_subset: goslim candida
in_subset: goslim generic
in_subset: goslim metagenomics
in_subset: goslim plant
in_subset: goslim yeast
in_subset: gosubset prok

synaptic vesicle
type: Class
subclass of: clathrin-coated vesicle
subclass of: synapse part
definition: A secretory organelle, some 50 nm in diameter, of presynaptic nerve terminals; accumulates in high concentrations of neurotransmitters and is secreted these into the synaptic cleft by fusion with the 'active zone' of the presynaptic plasma membrane.
id: GO:0008021
database_cross_reference: NIF_Subcellular:sao1071221672
database_cross_reference: Wikipedia:Synaptic_vesicle
has_obo_namespace: cellular_component
has_narrow_synonym: docked vesicle
imported from: go.owl

integrin complex
type: Class
subclass of: macromolecular complex
subclass of: plasma membrane part
definition: A protein complex that is composed of one alpha subunit and one beta subunit, both of which are members of the integrin superfamily of cell adhesion receptors; the complex spans the plasma membrane and binds to extracellular matrix ligands, cell-surface ligands, and soluble ligands.
id: GO:0008305
has_obo_namespace: cellular_component
has_related_synonym: laminin receptor protein
imported from: go.owl
in_subset: gosubset prok

external side of plasma membrane
type: Class
subclass of: plasma membrane part
id: GO:0009897
definition: The side of the plasma membrane that is opposite to the side that faces the cytoplasm.
has_obo_namespace: cellular_component
has_broad_synonym: juxtamembrane
has_exact_synonym: outer surface of cytoplasmic membrane
imported from: go.owl
in_subset: gosubset prok

internal side of plasma membrane
type: Class
subclass of: plasma membrane part
id: GO:0009898
definition: The side of the plasma membrane that faces the cytoplasm.
has_obo_namespace: cellular_component
has_broad_synonym: juxtamembrane
imported from: go.owl
in_subset: gosubset prok

endosome membrane
type: Class
subclass of: organelle membrane
subclass of: endosomal part
id: GO:0010008
definition: The lipid bilayer surrounding an endosome.
has_obo_namespace: cellular_component
imported from: go.owl

vesicle membrane
type: Class
subclass of: organelle membrane
subclass of: cell part
id: GO:0012506
database_cross_reference: NIF_Subcellular:sao1153182838
definition: The lipid bilayer surrounding any membrane-bounded vesicle in the cell.
has_obo_namespace: cellular_component
imported from: go.owl

ER to Golgi transport vesicle membrane
type: Class
subclass of: transport vesicle membrane
subclass of: coated vesicle membrane
has_exact_synonym: COPII coated vesicle membrane
has_exact_synonym: ER to Golgi constitutive secretory pathway transport vesicle membrane
has_exact_synonym: ER-Golgi transport vesicle membrane
id: GO:0012507
has_alternative_id: GO:0030664
definition: The lipid bilayer surrounding a vesicle transporting substances from the endoplasmic reticulum to the Golgi.
has_obo_namespace: cellular_component
has_exact_synonym: endoplasmic reticulum to Golgi transport vesicle membrane
has_exact_synonym: endoplasmic reticulum-Golgi transport vesicle membrane
imported from: go.owl

membrane
type: Class
subclass of: cellular_component
definition: Double layer of lipid molecules that encloses all cells, and, in eukaryotes, many organelles; may be a single or double lipid bilayer; also includes associated proteins.
id: GO:0016020
database_cross_reference: Wikipedia:Biological_membrane
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: goslim aspergillus
in_subset: goslim candida
in_subset: goslim metagenomics
in_subset: goslim pir
in_subset: goslim plant
in_subset: goslim yeast
in_subset: gosubset prok

cytoplasmic membrane-bounded vesicle
type: Class
subclass of: cytoplasmic vesicle
subclass of: vesicle
subclass of: intracellular membrane-bounded organelle
definition: A membrane-bounded vesicle found in the cytoplasm of the cell.
id: GO:0016023
has_obo_namespace: cellular_component
has_exact_synonym: cytoplasmic membrane bounded vesicle
has_exact_synonym: cytoplasmic membrane-enclosed vesicle
imported from: go.owl
in_subset: goslim aspergillus
in_subset: goslim candida
in_subset: goslim generic
in_subset: goslim yeast
in_subset: gosubset prok

viral envelope
type: Class
subclass of: cellular_component
id: GO:0019031
definition: The lipid bilayer of a virion that surrounds the protein capsid. May also contain glycoproteins.
database_cross_reference: Wikipedia:Viral_envelope
has_obo_namespace: cellular_component
has_related_synonym: viral glycoprotein
has_exact_synonym: viral outside membrane
imported from: go.owl

organelle inner membrane
type: Class
subclass of: organelle membrane
subclass of: intracellular part
id: GO:0019866
comment: See also the cellular component term 'outer membrane ; GO:0019867'.
definition: The inner, i.e. lumen-facing, lipid bilayer of an organelle envelope; usually highly selective to most ions and metabolites.
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok

cell junction
type: Class
subclass of: cellular_component
definition: A cellular component that forms a specialized region of connection between two cells or between a cell and the extracellular matrix. At a cell junction, anchoring proteins extend through the plasma membrane to link cytoskeletal proteins in one cell to cytoskeletal proteins in neighboring cells or to proteins in the extracellular matrix.
id: GO:0030054
database_cross_reference: Wikipedia:Cell_junction
has_obo_namespace: cellular_component
imported from: go.owl

transport vesicle
type: Class
subclass of: cytoplasmic membrane-bounded vesicle
definition: Any of the vesicles of the constitutive secretory pathway, which carry cargo from the endoplasmic reticulum to the Golgi, between Golgi cisternae, or to destinations within or outside the cell.
id: GO:0030133
has_narrow_synonym: Golgi to vacuole transport vesicle
has_narrow_synonym: Golgi-vacuole transport vesicle
database_cross_reference: NIF_Subcellular:sao885490876
comment: Note that the term 'secretory vesicle' is sometimes used in this sense, but can also mean 'secretory granule ; GO:0030141'.
has_obo_namespace: cellular_component
has_exact_synonym: constitutive secretory pathway transport vesicle
has_broad_synonym: secretory vesicle
imported from: go.owl

clathrin-coated vesicle
type: Class
subclass of: cytoplasmic membrane-bounded vesicle
definition: A vesicle with a coat formed of clathrin connected to the membrane via one of the clathrin adaptor complexes.
id: GO:0030136
database_cross_reference: NIF_Subcellular:sao148845161
has_obo_namespace: cellular_component
imported from: go.owl

endocytic vesicle
type: Class
subclass of: cytoplasmic membrane-bounded vesicle
definition: A membrane-bounded intracellular vesicle formed by invagination of the plasma membrane around an extracellular substance. Endocytic vesicles fuse with early endosomes to deliver the cargo for further sorting.
id: GO:0030139
database_cross_reference: NIF_Subcellular:sao1362520468
has_obo_namespace: cellular_component
has_exact_synonym: endocytotic transport vesicle
has_exact_synonym: endocytotic vesicle
imported from: go.owl
in_subset: gosubset prok

secretory granule
type: Class
subclass of: cytoplasmic membrane-bounded vesicle
definition: A small subcellular vesicle, surrounded by a membrane, that is formed from the Golgi apparatus and contains a highly concentrated protein destined for secretion. Secretory granules move towards the periphery of the cell and upon stimulation, their membranes fuse with the cell membrane, and their protein load is exteriorized. Processing of the contained protein may take place in secretory granules.
id: GO:0030141
comment: Note that the term 'secretory vesicle' is sometimes used in this sense, but can also mean 'transport vesicle ; GO:0030133'.
has_obo_namespace: cellular_component
has_broad_synonym: secretory vesicle
imported from: go.owl

integral to endoplasmic reticulum membrane
type: Class
subclass of: intrinsic to endoplasmic reticulum membrane
subclass of: integral to organelle membrane
has_exact_synonym: ER integral membrane protein
id: GO:0030176
definition: Penetrating at least one phospholipid bilayer of an endoplasmic reticulum membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer.
has_obo_namespace: cellular_component
has_exact_synonym: integral to ER membrane
imported from: go.owl

transport vesicle membrane
type: Class
subclass of: cytoplasmic vesicle membrane
id: GO:0030658
definition: The lipid bilayer surrounding a transport vesicle.
has_obo_namespace: cellular_component
has_exact_synonym: constitutive secretory pathway transport vesicle membrane
has_broad_synonym: secretory vesicle membrane
imported from: go.owl

cytoplasmic vesicle membrane
type: Class
subclass of: vesicle membrane
subclass of: cytoplasmic vesicle part
id: GO:0030659
definition: The lipid bilayer surrounding a cytoplasmic vesicle.
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok

Golgi-associated vesicle membrane
type: Class
subclass of: Golgi membrane
subclass of: cytoplasmic vesicle membrane
id: GO:0030660
has_related_synonym: Golgi vesicle membrane
definition: The lipid bilayer surrounding a vesicle associated with the Golgi apparatus.
has_obo_namespace: cellular_component
imported from: go.owl

coated vesicle membrane
type: Class
subclass of: cytoplasmic vesicle membrane
id: GO:0030662
definition: The lipid bilayer surrounding a coated vesicle.
has_obo_namespace: cellular_component
imported from: go.owl

clathrin-coated vesicle membrane
type: Class
subclass of: coated vesicle membrane
id: GO:0030665
definition: The lipid bilayer surrounding a clathrin-coated vesicle.
has_obo_namespace: cellular_component
has_narrow_synonym: clathrin coated vesicle membrane
imported from: go.owl

endocytic vesicle membrane
type: Class
subclass of: cytoplasmic vesicle membrane
id: GO:0030666
definition: The lipid bilayer surrounding an endocytic vesicle.
has_obo_namespace: cellular_component
imported from: go.owl

secretory granule membrane
type: Class
subclass of: cytoplasmic vesicle membrane
id: GO:0030667
definition: The lipid bilayer surrounding a secretory granule.
has_obo_namespace: cellular_component
has_broad_synonym: secretory vesicle membrane
imported from: go.owl

clathrin-coated endocytic vesicle membrane
type: Class
subclass of: clathrin-coated vesicle membrane
subclass of: endocytic vesicle membrane
id: GO:0030669
definition: The lipid bilayer surrounding a clathrin-coated endocytic vesicle.
has_obo_namespace: cellular_component
imported from: go.owl

phagocytic vesicle membrane
type: Class
subclass of: endocytic vesicle membrane
id: GO:0030670
definition: The lipid bilayer surrounding a phagocytic vesicle.
has_obo_namespace: cellular_component
has_exact_synonym: phagosome membrane
imported from: go.owl

synaptic vesicle membrane
type: Class
subclass of: clathrin-coated vesicle membrane
subclass of: synapse part
id: GO:0030672
definition: The lipid bilayer surrounding a synaptic vesicle.
has_obo_namespace: cellular_component
imported from: go.owl

platelet dense granule membrane
type: Class
subclass of: secretory granule membrane
id: GO:0031088
definition: The lipid bilayer surrounding the platelet dense granule.
has_obo_namespace: cellular_component
imported from: go.owl

platelet dense granule lumen
type: Class
subclass of: secretory granule lumen
id: GO:0031089
definition: The volume enclosed by the membrane of the platelet dense granule.
has_obo_namespace: cellular_component
imported from: go.owl

organelle membrane
type: Class
subclass of: membrane
subclass of: organelle part
id: GO:0031090
definition: The lipid bilayer surrounding an organelle.
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok

platelet alpha granule membrane
type: Class
subclass of: secretory granule membrane
id: GO:0031092
definition: The lipid bilayer surrounding the platelet alpha granule.
has_obo_namespace: cellular_component
has_exact_synonym: platelet alpha-granule membrane
imported from: go.owl

platelet alpha granule lumen
type: Class
subclass of: secretory granule lumen
id: GO:0031093
definition: The volume enclosed by the membrane of the platelet alpha granule.
has_obo_namespace: cellular_component
has_exact_synonym: platelet alpha-granule lumen
imported from: go.owl

platelet dense tubular network membrane
type: Class
subclass of: organelle membrane
subclass of: intracellular part
id: GO:0031095
definition: The lipid bilayer surrounding the platelet dense tubular network.
has_obo_namespace: cellular_component
imported from: go.owl

intrinsic to membrane
type: Class
subclass of: membrane part
id: GO:0031224
definition: Located in a membrane such that some covalently attached portion of the gene product, for example part of a peptide sequence or some other covalently attached group such as a GPI anchor, spans or is embedded in one or both leaflets of the membrane.
comment: Note that proteins intrinsic to membranes cannot be removed without disrupting the membrane, e.g. by detergent.
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok

intrinsic to endoplasmic reticulum membrane
type: Class
subclass of: intrinsic to organelle membrane
subclass of: endoplasmic reticulum part
id: GO:0031227
definition: Located in the endoplasmic reticulum membrane such that some covalently attached portion of the gene product, for example part of a peptide sequence or some other covalently attached group such as a GPI anchor, spans or is embedded in one or both leaflets of the membrane.
has_obo_namespace: cellular_component
imported from: go.owl

intrinsic to organelle membrane
type: Class
subclass of: intrinsic to membrane
subclass of: intracellular organelle part
id: GO:0031300
definition: Located in an organelle membrane such that some covalently attached portion of the gene product, for example part of a peptide sequence or some other covalently attached group such as a GPI anchor, spans or is embedded in one or both leaflets of the membrane.
has_obo_namespace: cellular_component
imported from: go.owl

integral to organelle membrane
type: Class
subclass of: intrinsic to membrane
subclass of: intrinsic to organelle membrane
id: GO:0031301
definition: Penetrating at least one phospholipid bilayer of an organelle membrane. May also refer to the state of being buried in the bilayer with no exposure outside the bilayer.
has_obo_namespace: cellular_component
imported from: go.owl

cytoplasmic vesicle
type: Class
subclass of: vesicle
subclass of: intracellular organelle
subclass of: cytoplasmic part
definition: A vesicle formed of membrane or protein, found in the cytoplasm of a cell.
id: GO:0031410
database_cross_reference: NIF_Subcellular:sao180601769
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok

early endosome membrane
type: Class
subclass of: endosome membrane
id: GO:0031901
definition: The lipid bilayer surrounding an early endosome.
has_obo_namespace: cellular_component
imported from: go.owl

late endosome membrane
type: Class
subclass of: endosome membrane
id: GO:0031902
definition: The lipid bilayer surrounding a late endosome.
has_obo_namespace: cellular_component
imported from: go.owl

microbody membrane
type: Class
subclass of: organelle membrane
subclass of: microbody
id: GO:0031903
definition: The lipid bilayer surrounding a microbody.
has_obo_namespace: cellular_component
imported from: go.owl

endosome lumen
type: Class
subclass of: endosomal part
subclass of: intracellular organelle lumen
id: GO:0031904
database_cross_reference: NIF_Subcellular:sao1547508851
definition: The volume enclosed by the membrane of an endosome.
has_obo_namespace: cellular_component
imported from: go.owl

early endosome lumen
type: Class
subclass of: endosome lumen
id: GO:0031905
definition: The volume enclosed by the membrane of an early endosome.
has_obo_namespace: cellular_component
imported from: go.owl

microbody lumen
type: Class
subclass of: microbody part
subclass of: intracellular organelle lumen
id: GO:0031907
definition: The volume enclosed by the membranes of a microbody.
has_obo_namespace: cellular_component
imported from: go.owl

mitochondrial membrane
type: Class
subclass of: organelle membrane
subclass of: mitochondrial part
definition: Either of the lipid bilayers that surround the mitochondrion and form the mitochondrial envelope.
id: GO:0031966
has_obo_namespace: cellular_component
imported from: go.owl

organelle envelope
type: Class
subclass of: intracellular organelle part
subclass of: cell part
definition: A double membrane structure enclosing an organelle, including two lipid bilayers and the region between them. In some cases, an organelle envelope may have more than two membranes.
id: GO:0031967
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok

organelle outer membrane
type: Class
subclass of: membrane
subclass of: organelle membrane
subclass of: intracellular part
id: GO:0031968
definition: The outer, i.e. cytoplasm-facing in a cellular organelle, lipid bilayer of an organelle envelope.
has_obo_namespace: cellular_component
imported from: go.owl

organelle envelope lumen
type: Class
subclass of: membrane-enclosed lumen
subclass of: intracellular organelle part
id: GO:0031970
definition: The region between the inner and outer lipid bilayers of an organelle envelope.
has_obo_namespace: cellular_component
has_exact_synonym: organelle intermembrane space
imported from: go.owl

membrane-enclosed lumen
type: Class
subclass of: cellular_component
id: GO:0031974
definition: The enclosed volume within a sealed membrane or between two sealed membranes. Encompasses the volume enclosed by the membranes of a particular organelle, e.g. endoplasmic reticulum lumen, or the space between the two lipid bilayers of a double membrane surrounding an organelle, e.g. nuclear envelope lumen.
has_obo_namespace: cellular_component
imported from: go.owl

vesicle
type: Class
subclass of: organelle
definition: Any small, fluid-filled, spherical organelle enclosed by membrane or protein.
id: GO:0031982
database_cross_reference: NIF_Subcellular:sao221389602
database_cross_reference: Wikipedia:Vesicle_(biology)
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: goslim metagenomics
in_subset: goslim pir
in_subset: gosubset prok

phagolysosome
type: Class
subclass of: vacuole
subclass of: phagocytic vesicle
definition: A membrane-bounded intracellular vesicle formed by maturation of an early phagosome following the ingestion of particulate material by phagocytosis; during maturation, phagosomes acquire markers of late endosomes and lysosomes.
id: GO:0032010
database_cross_reference: Wikipedia:Phagolysosome
has_obo_namespace: cellular_component
has_related_synonym: late phagocytic vesicle
has_related_synonym: late phagosome
imported from: go.owl

trans-Golgi network membrane
type: Class
subclass of: organelle membrane
subclass of: intracellular part
id: GO:0032588
has_related_synonym: Golgi trans face membrane
definition: The lipid bilayer surrounding any of the compartments that make up the trans-Golgi network.
has_obo_namespace: cellular_component
has_exact_synonym: trans Golgi network membrane
imported from: go.owl

macromolecular complex
type: Class
subclass of: cellular_component
definition: A stable assembly of two or more macromolecules, i.e. proteins, nucleic acids, carbohydrates or lipids, in which the constituent parts function together.
id: GO:0032991
has_obo_namespace: cellular_component
has_exact_synonym: macromolecule complex
imported from: go.owl
in_subset: goslim pir
in_subset: gosubset prok

secretory granule lumen
type: Class
subclass of: cytoplasmic membrane-bounded vesicle lumen
id: GO:0034774
definition: The volume enclosed by the membrane of a secretory granule.
has_obo_namespace: cellular_component
imported from: go.owl

azurophil granule lumen
type: Class
subclass of: vacuolar lumen
subclass of: secretory granule lumen
id: GO:0035578
definition: The volume enclosed by the membrane of an azurophil granule, a primary lysosomal granule found in neutrophil granulocytes that contains a wide range of hydrolytic enzymes and is released into the extracellular fluid.
has_obo_namespace: cellular_component
has_exact_synonym: primary granule lumen
imported from: go.owl

endolysosome membrane
type: Class
subclass of: lysosomal membrane
subclass of: endosome membrane
id: GO:0036020
definition: The lipid bilayer surrounding an endolysosome. An endolysosome is a transient hybrid organelle formed by fusion of a late endosome with a lysosome.
has_obo_namespace: cellular_component
has_exact_synonym: endolysosomal membrane
imported from: go.owl

endolysosome lumen
type: Class
subclass of: endosome lumen
subclass of: lysosomal lumen
id: GO:0036021
definition: The volume enclosed by the membrane of an endolysosome. An endolysosome is a transient hybrid organelle formed by fusion of a late endosome with a lysosome.
has_obo_namespace: cellular_component
has_exact_synonym: endolysosomal lumen
imported from: go.owl

microbody
type: Class
subclass of: intracellular membrane-bounded organelle
subclass of: cytoplasmic part
definition: Cytoplasmic organelles, spherical or oval in shape, that are bounded by a single membrane and contain oxidative enzymes, especially those utilizing hydrogen peroxide (H2O2).
id: GO:0042579
database_cross_reference: Wikipedia:Microbody
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: goslim pir

periplasmic space
type: Class
subclass of: cell part
has_alternative_id: GO:0005620
id: GO:0042597
definition: The region between the inner (cytoplasmic) and outer membrane (Gram-negative Bacteria) or inner membrane and cell wall (Fungi).
has_obo_namespace: cellular_component
has_exact_synonym: periplasm
imported from: go.owl
in_subset: goslim metagenomics
in_subset: goslim pir
in_subset: gosubset prok

lysosomal lumen
type: Class
subclass of: vacuolar lumen
id: GO:0043202
definition: The volume enclosed within the lysosomal membrane.
has_obo_namespace: cellular_component
imported from: go.owl

organelle
type: Class
subclass of: cellular_component
id: GO:0043226
database_cross_reference: NIF_Subcellular:sao1539965131
definition: Organized structure of distinctive morphology and function. Includes the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton, and prokaryotic structures such as anammoxosomes and pirellulosomes. Excludes the plasma membrane.
database_cross_reference: Wikipedia:Organelle
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: goslim generic
in_subset: goslim pir
in_subset: gosubset prok

intracellular organelle
type: Class
subclass of: organelle
subclass of: intracellular part
id: GO:0043229
definition: Organized structure of distinctive morphology and function, occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton. Excludes the plasma membrane.
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: goslim pir
in_subset: gosubset prok

intracellular membrane-bounded organelle
type: Class
subclass of: organelle
subclass of: intracellular organelle
id: GO:0043231
definition: Organized structure of distinctive morphology and function, bounded by a single or double lipid bilayer membrane and occurring within the cell. Includes the nucleus, mitochondria, plastids, vacuoles, and vesicles. Excludes the plasma membrane.
has_obo_namespace: cellular_component
has_exact_synonym: intracellular membrane-enclosed organelle
imported from: go.owl
in_subset: goslim pir
in_subset: gosubset prok

intracellular non-membrane-bounded organelle
type: Class
subclass of: organelle
subclass of: intracellular organelle
id: GO:0043232
definition: Organized structure of distinctive morphology and function, not bounded by a lipid bilayer membrane and occurring within the cell. Includes ribosomes, the cytoskeleton and chromosomes.
has_obo_namespace: cellular_component
has_exact_synonym: intracellular non-membrane-enclosed organelle
imported from: go.owl
in_subset: goslim pir
in_subset: gosubset prok

organelle lumen
type: Class
subclass of: membrane-enclosed lumen
subclass of: organelle part
id: GO:0043233
definition: The internal volume enclosed by the membranes of a particular organelle; includes the volume enclosed by a single organelle membrane, e.g. endoplasmic reticulum lumen, or the volume enclosed by the innermost of the two lipid bilayers of an organelle envelope, e.g. nuclear lumen.
has_obo_namespace: cellular_component
imported from: go.owl

endoplasmic reticulum quality control compartment
type: Class
subclass of: endoplasmic reticulum part
definition: A subcompartment of the endoplasmic reticulum in which proteins with improper or incorrect folding accumulate. Enzymes in this compartment direct proteins with major folding problems to translocation to the cytosol and degradation, and proteins with minor folding problems to the ER, to interact with chaperon proteins.
has_exact_synonym: ER quality control compartment
has_related_synonym: ER-derived quality control compartment
has_exact_synonym: ERQC
id: GO:0044322
has_obo_namespace: cellular_component
imported from: go.owl

organelle part
type: Class
subclass of: cellular_component
definition: Any constituent part of an organelle, an organized structure of distinctive morphology and function. Includes constituent parts of the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton, but excludes the plasma membrane.
id: GO:0044422
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok
in_subset: high level annotation qc

intracellular part
type: Class
subclass of: cell part
definition: Any constituent part of the living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.
id: GO:0044424
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok
in_subset: high level annotation qc

membrane part
type: Class
subclass of: cellular_component
definition: Any constituent part of a membrane, a double layer of lipid molecules that encloses all cells, and, in eukaryotes, many organelles; may be a single or double lipid bilayer; also includes associated proteins.
id: GO:0044425
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok
in_subset: high level annotation qc

nuclear part
type: Class
subclass of: intracellular organelle part
definition: Any constituent part of the nucleus, a membrane-bounded organelle of eukaryotic cells in which chromosomes are housed and replicated.
id: GO:0044428
has_obo_namespace: cellular_component
has_exact_synonym: nucleus component
imported from: go.owl
in_subset: high level annotation qc

mitochondrial part
type: Class
subclass of: cytoplasmic part
subclass of: intracellular organelle part
definition: Any constituent part of a mitochondrion, a semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration.
id: GO:0044429
has_obo_namespace: cellular_component
has_exact_synonym: mitochondrion component
imported from: go.owl
in_subset: high level annotation qc

Golgi apparatus part
type: Class
subclass of: cytoplasmic part
subclass of: intracellular organelle part
definition: Any constituent part of the Golgi apparatus, a compound membranous cytoplasmic organelle of eukaryotic cells, consisting of flattened, ribosome-free vesicles arranged in a more or less regular stack.
id: GO:0044431
has_exact_synonym: Golgi component
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: high level annotation qc

endoplasmic reticulum part
type: Class
subclass of: cytoplasmic part
subclass of: intracellular organelle part
definition: Any constituent part of the endoplasmic reticulum, the irregular network of unit membranes, visible only by electron microscopy, that occurs in the cytoplasm of many eukaryotic cells. The membranes form a complex meshwork of tubular channels, which are often expanded into slitlike cavities called cisternae.
has_exact_synonym: ER component
id: GO:0044432
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: high level annotation qc

cytoplasmic vesicle part
type: Class
subclass of: cytoplasmic part
subclass of: intracellular organelle part
definition: Any constituent part of cytoplasmic vesicle, a vesicle formed of membrane or protein, found in the cytoplasm of a cell.
id: GO:0044433
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok
in_subset: high level annotation qc

vacuolar part
type: Class
subclass of: cytoplasmic part
subclass of: intracellular organelle part
definition: Any constituent part of a vacuole, a closed structure, found only in eukaryotic cells, that is completely surrounded by unit membrane and contains liquid material.
id: GO:0044437
has_obo_namespace: cellular_component
has_exact_synonym: vacuole component
imported from: go.owl
in_subset: gosubset prok
in_subset: high level annotation qc

microbody part
type: Class
subclass of: cytoplasmic part
subclass of: intracellular organelle part
definition: Any constituent part of a microbody, a cytoplasmic organelle, spherical or oval in shape, that is bounded by a single membrane and contains oxidative enzymes, especially those utilizing hydrogen peroxide (H2O2).
id: GO:0044438
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: high level annotation qc

peroxisomal part
type: Class
subclass of: microbody part
definition: Any constituent part of a peroxisome, a small, membrane-bounded organelle that uses dioxygen (O2) to oxidize organic molecules; contains some enzymes that produce and others that degrade hydrogen peroxide (H2O2).
id: GO:0044439
has_obo_namespace: cellular_component
has_exact_synonym: peroxisome component
imported from: go.owl
in_subset: high level annotation qc

endosomal part
type: Class
subclass of: cytoplasmic part
subclass of: intracellular organelle part
definition: Any constituent part of an endosome, a membrane-bounded organelle to which materials ingested by endocytosis are delivered.
id: GO:0044440
has_obo_namespace: cellular_component
has_exact_synonym: endosome component
imported from: go.owl
in_subset: high level annotation qc

cilium part
type: Class
subclass of: intracellular organelle part
subclass of: cell projection part
definition: Any constituent part of a cilium, a specialized eukaryotic organelle that consists of a filiform extrusion of the cell surface. Each cilium is bounded by an extrusion of the cytoplasmic membrane, and contains a regular longitudinal array of microtubules, anchored basally in a centriole.
id: GO:0044441
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: high level annotation qc

cytoplasmic part
type: Class
subclass of: intracellular part
definition: Any constituent part of the cytoplasm, all of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
id: GO:0044444
has_obo_namespace: cellular_component
has_exact_synonym: cytoplasm component
imported from: go.owl
in_subset: gosubset prok
in_subset: high level annotation qc

intracellular organelle part
type: Class
subclass of: organelle part
subclass of: intracellular part
definition: A constituent part of an intracellular organelle, an organized structure of distinctive morphology and function, occurring within the cell. Includes constituent parts of the nucleus, mitochondria, plastids, vacuoles, vesicles, ribosomes and the cytoskeleton but excludes the plasma membrane.
id: GO:0044446
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok
in_subset: high level annotation qc

synapse part
type: Class
subclass of: cellular_component
definition: Any constituent part of a synapse, the junction between a nerve fiber of one neuron and another neuron or muscle fiber or glial cell.
id: GO:0044456
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: high level annotation qc

plasma membrane part
type: Class
subclass of: membrane part
subclass of: cell part
definition: Any constituent part of the plasma membrane, the membrane surrounding a cell that separates the cell from its external environment. It consists of a phospholipid bilayer and associated proteins.
id: GO:0044459
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok
in_subset: high level annotation qc

cell projection part
type: Class
subclass of: cell part
definition: Any constituent part of a cell projection, a prolongation or process extending from a cell, e.g. a flagellum or axon.
id: GO:0044463
has_obo_namespace: cellular_component
imported from: go.owl
in_subset: gosubset prok
in_subset: high level annotation qc

cell part
type: Class
subclass of: cellular_component
definition: Any constituent part of a cell, the basic structural and functional unit of all organisms.
id: GO:0044464
has_obo_namespace: cellular_component
has_related_synonym: protoplast
imported from: go.owl
in_subset: goslim pir
in_subset: gosubset prok
in_subset: high level annotation qc

clathrin-coated endocytic vesicle
type: Class
subclass of: clathrin-coated vesicle
subclass of: endocytic vesicle
definition: A clathrin-coated, membrane-bounded intracellular vesicle formed by invagination of the plasma membrane around an extracellular substance.
id: GO:0045334
database_cross_reference: NIF_Subcellular:sao1243595998
has_obo_namespace: cellular_component
imported from: go.owl

phagocytic vesicle
type: Class
subclass of: endocytic vesicle
definition: A membrane-bounded intracellular vesicle that arises from the ingestion of particulate material by phagocytosis.
id: GO:0045335
database_cross_reference: Wikipedia:Phagosome
has_obo_namespace: cellular_component
has_exact_synonym: phagosome
imported from: go.owl

cytoplasmic membrane-bounded vesicle lumen
type: Class
subclass of: organelle lumen
subclass of: cytoplasmic vesicle part
id: GO:0060205
definition: The volume enclosed by the membrane of a cytoplasmic membrane-bounded vesicle.
has_obo_namespace: cellular_component
has_exact_synonym: cytoplasmic membrane-enclosed vesicle lumen
imported from: go.owl

clathrin-sculpted gamma-aminobutyric acid transport vesicle
type: Class
subclass of: clathrin-coated vesicle
definition: A clathrin-sculpted lipid bilayer membrane-enclosed vesicle after clathrin release and containing gamma-aminobutyric acid transport vesicle.
id: GO:0061200
has_obo_namespace: cellular_component
has_exact_synonym: clathrin sculpted GABA transport vesicle
has_exact_synonym: clathrin sculpted gamma-aminobutyric acid transport vesicle
imported from: go.owl

clathrin-sculpted gamma-aminobutyric acid transport vesicle membrane
type: Class
subclass of: clathrin-coated vesicle membrane
id: GO:0061202
definition: The lipid bilayer surrounding a clathrin-sculpted gamma-aminobutyric acid transport vesicle.
has_obo_namespace: cellular_component
has_exact_synonym: clathrin sculpted GABA transport vesicle membrane
has_exact_synonym: clathrin sculpted gamma-aminobutyric acid transport vesicle membrane
imported from: go.owl

intracellular organelle lumen
type: Class
subclass of: organelle lumen
subclass of: intracellular organelle part
definition: An organelle lumen that is part of an intracellular organelle.
id: GO:0070013
has_obo_namespace: cellular_component
imported from: go.owl

clathrin-sculpted monoamine transport vesicle lumen
type: Class
subclass of: cytoplasmic membrane-bounded vesicle lumen
id: GO:0070082
definition: The volume enclosed by the membrane of the clathrin-sculpted monoamine transport vesicle.
has_obo_namespace: cellular_component
has_exact_synonym: clathrin sculpted monoamine constitutive secretory pathway transport vesicle lumen
has_exact_synonym: clathrin sculpted monoamine transport vesicle lumen
imported from: go.owl

clathrin-sculpted monoamine transport vesicle membrane
type: Class
subclass of: transport vesicle membrane
subclass of: clathrin-coated vesicle membrane
id: GO:0070083
definition: The lipid bilayer surrounding a clathrin-sculpted monoamine transport vesicle.
has_obo_namespace: cellular_component
has_exact_synonym: clathrin sculpted monoamine constitutive secretory pathway transport vesicle membrane
has_exact_synonym: clathrin sculpted monoamine transport vesicle membrane
imported from: go.owl

integral to lumenal side of endoplasmic reticulum membrane
type: Class
subclass of: integral to endoplasmic reticulum membrane
id: GO:0071556
definition: Penetrating at least one phospholipid bilayer of the endoplasmic reticulum membrane, with the bulk of the gene product located on the side that faces the lumen.
has_obo_namespace: cellular_component
has_exact_synonym: integral to ER membrane, lumenal side
has_exact_synonym: integral to lumenal side of ER membrane
imported from: go.owl

phagocytic vesicle lumen
type: Class
subclass of: cytoplasmic membrane-bounded vesicle lumen
id: GO:0097013
definition: The volume enclosed by the membrane of a phagocytic vesicle.
has_obo_namespace: cellular_component
imported from: go.owl

photoreceptor disc membrane
type: Class
subclass of: membrane
subclass of: cilium part
id: GO:0097381
definition: Ovally-shaped membranous stack located inside the photoreceptor outer segment, and containing densely packed molecules of the photoreceptor protein rhodopsin that traverse the lipid bilayer. Disc membranes are apparently derived from the plasma membrane in the region of the cilium that connects the photoreceptor outer segment to the inner segment.
has_obo_namespace: cellular_component
imported from: go.owl