cellular compartment
Enable an agent to recognise a cellular compartment, assess how it maintains a distinct local environment, and judge which observations or interventions are appropriate.
Bundle → Layer → Finding → Questions Filled
5 bundles · 9 layers · 15 findings · 23 questions
Compartment identity and topology Establish what counts as the compartment and where its extent lies within cellular organisation.
Definition and inclusion
Record the operational meaning of compartment used for the candidate.
Explicit compartment criterion
The model must state which spatial and organisational properties qualify the candidate, including whether membrane-free regions are admitted.
- Which definition is being applied, and what observable properties must this region satisfy? definition
- Which publication, ontology or experimental convention supplies that definition? provenance
Extent and nesting
Resolve the candidate's boundaries and relationships to other cellular regions.
Region versus containing structure
The model must distinguish a lumen, its bounding membrane and the larger structure containing both, while allowing explicitly defined composite regions.
- Does the named compartment include its bounding membrane, only its interior or another specified spatial extent? boundary
- Which neighbouring regions are enclosed, contacted or physically continuous with it? boundary
Boundary and selective exchange Represent the mechanisms and observations that support separation while permitting molecular exchange.
Boundary maintenance
Describe how the proposed interface is organised and sustained.
Separation mechanism
The model must distinguish observed boundary features from hypotheses about membrane barriers, partitioning or other mechanisms maintaining spatial differentiation.
- What observation supports a boundary or persistent spatial differentiation rather than a segmentation choice? measurement
- Which proposed separation mechanisms remain compatible with the evidence? definition
Exchange and connectivity
Record entry, exit and continuity for specified constituents.
Species-specific exchange
Exchange claims must identify the constituent, route, direction and conditions rather than assigning a single permeability to the entire compartment.
- For which molecules have entry, exit or residence times been measured, and by what method? measurement
- What perturbation could distinguish passive redistribution from mediated transport or physical continuity? action
Local environment and function Connect compartment-specific composition and conditions to spatially supported biological activities.
Composition and conditions
Characterise constituents and relevant local physicochemical measurements.
Measured local distinction
The model must identify how composition or local conditions differ from a specified reference region and preserve measurement limitations.
- Which constituents or conditions distinguish this compartment from its immediate surroundings? measurement
- How were localisation, sensor calibration and contamination from adjacent regions assessed? provenance
Spatial functional attribution
Assess whether an activity occurs within the compartment and depends on its organisation.
Localisation versus functional dependence
The model must distinguish component presence, local activity and evidence that compartmental organisation is required for that activity.
- What evidence places the activity itself in this region rather than merely locating one associated molecule there? measurement
- What intervention could test dependence on compartment organisation while checking effects on the rest of the cell? action
Dynamics and evidence-guided intervention Track compartment state through time and establish how observations can support intervention decisions.
Formation and state transitions
Describe emergence, persistence, remodelling and loss of the compartment.
Identity through remodelling
The model must specify how instances are tracked across changes in shape, composition, division or merging.
- What tracking criterion identifies the same compartment across successive observations? definition
- Which temporal evidence distinguishes formation or disappearance from movement, marker loss or a change in imaging visibility? measurement
Observation and perturbation validity
Assess artefacts, intervention specificity and the evidence needed to interpret a changed compartment state.
Validated compartment response
The model must connect a proposed intervention to a measurable compartment response and distinguish that response from preparation artefacts or general cellular disruption.
- Which independent observation could check whether labelling, fixation, fractionation or imaging created the apparent compartment state? measurement
- Which compartment readout, whole-cell control and recovery observation are needed to interpret the proposed perturbation? action
Evidence and external alignment What the world already says about this thing, gathered so the model can be checked against it.
Reported evidence
Findings from the breadth pass, kept separate from the structural claims.
Check these first
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these check these first hold for the sense of cellular compartment this model covers, and on what evidence? provenance
Kinds and varieties
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these kinds and varieties hold for the sense of cellular compartment this model covers, and on what evidence? provenance
Identifiers and schemes
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these identifiers and schemes hold for the sense of cellular compartment this model covers, and on what evidence? provenance
Real-world use
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these real-world use hold for the sense of cellular compartment this model covers, and on what evidence? provenance
Typical measurements
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these typical measurements hold for the sense of cellular compartment this model covers, and on what evidence? provenance
Failure modes and hazards
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these failure modes and hazards hold for the sense of cellular compartment this model covers, and on what evidence? provenance
Neighbouring kinds and how to tell them apart
Recalled without web access and unsourced; every item is a lead to verify.
- Which of these neighbouring kinds and how to tell them apart hold for the sense of cellular compartment this model covers, and on what evidence? provenance
Classifiers Filled
- Family
- Thing Registry
- Category
- Activities and processes
- Entry kind
- thing
- Plane
- ACT
- Domain
- ACT.PRC
- Other names and narrower kinds
- chromosome territories, Encapsulin nanocompartment
What it is Filled
A cellular compartment is a closed, membrane-enclosed part within the cytosol that maintains an internal molecular composition or biochemical environment distinct from its surroundings while permitting regulated exchange.
In scope
- Operational definitions of compartment identity in a specified cell type and condition.
- Closed, membrane-enclosed parts within the cytosol, with evidence of enclosure recorded.
- Boundary organisation, internal composition and distinction from adjacent regions.
- Transport and reactions that maintain or modify compartment state.
- Compartment formation, remodelling, inheritance and disappearance.
- Evidence supporting localisation, compartment integrity and functional attribution.
Out of scope
- Whole-cell identity, physiology and life-cycle models.
- Complete models of particular organelles and their specialised machinery.
- Molecular identities and intrinsic properties of constituent proteins, lipids and metabolites.
- Extracellular tissue compartments and anatomical spaces.
- Complete biochemical pathway models independent of spatial localisation.
- Purely computational compartments without an asserted correspondence to a cellular region.
- Non-enclosed intracellular regions, membraneless condensates and membrane domains considered independently of an enclosed space.
Why it exists Filled
Enable an agent to recognise a cellular compartment, assess how it maintains a distinct local environment, and judge which observations or interventions are appropriate.
Distinguishing features Filled
- An instance must identify a region in a particular cellular context; a cellular-component vocabulary term alone identifies a class rather than a physical instance.
- A compartment claim must support a closed membrane boundary enclosing an internal space within the cytosol; a drawn image region or selective molecular partitioning alone is insufficient.
- A local concentration peak does not establish a compartment without evidence of enclosure.
- Compartment and organelle must not be assumed synonymous, and a membrane domain alone does not constitute an enclosed compartment.
- A functional label must map to a spatially supported enclosed region; participation in the same pathway does not by itself establish a shared compartment.
What robots and AI may and may not do Filled
Must not
- Assign a protein or molecule to a compartment with more certainty than the evidence supports.
- Falsify or manipulate microscopy images used as evidence of localization.
- Classify non-enclosed regions, membraneless condensates or membrane domains as cellular compartments in this closed-part sense.
Only with a human decision
- Publishing curated localization annotations to shared databases.
May
- Explain cellular compartments and their functions, citing cell biology sources.
- Annotate compartments in microscopy images or data using a controlled vocabulary.
Moral aspects Filled
- Research findings on cell compartments feed into medicine; errors mislead later work.
- Image manipulation in biology undermines trust in science.
Who is affected
- Researchers
- Patients relying on research
- Database users
Owners Filled
Steward
Nobody owns the concept; ontology curators maintain its shared vocabulary.
Master systems
- Gene and cell component ontologies
Links to other meta-models Filled
parent
- Q14873025 - registry parent class
- Q5058355 - registry parent class
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.cellular-compartment
- Wikidata: Q189055 (https://www.wikidata.org/wiki/Q189055)
Direct properties not applicable Not applicable
- Cellular context: Host cell, organism, cell type, developmental stage and experimental condition
- Compartment inclusion criterion: Membrane enclosure, selective partitioning, restricted exchange, other explicitly defined criterion or unresolved
- Boundary organisation: Membrane-bounded, membrane-free interface, mixed, diffuse or unresolved
- Spatial extent: Volume in µm³, area in µm² or characteristic length in µm, with segmentation method and uncertainty
- Topological relationships: Contained within, encloses, adjacent to, contacts or continuous with an identified region
- Local molecular enrichment: Dimensionless inside-to-reference concentration ratio for a named constituent under stated conditions
- Exchange behaviour: Species-specific flux in mol/s, residence time in s or recovery timescale in s, with the measurement model stated
- Observed organisational state: Forming, maintained, remodelling, dividing, merging, disassembling, disrupted or unresolved
Plane ACT: no invented physical properties.
Recognition optional Filled
- Membrane-enclosed structures such as nuclei, mitochondria or vesicles can provide evidence of cellular compartments.
- Fluorescent markers can support localisation, but a labelled region alone does not establish a closed boundary.
Capabilities and actions required Filled
- Classify a candidate region under an explicit compartment definition and record competing interpretations.
- Map compartment nesting, adjacency and continuity within a cell.
- Compare composition, geometry and exchange across conditions using compatible measurements.
- Select localisation and boundary assays that distinguish a compartment from an imaging or preparation artefact.
- Assess proposed perturbations of transport, boundary organisation or local chemistry against compartment-specific evidence.
- Track compartment formation, remodelling and loss while preserving uncertainty about identity over time.
Hazards and failure modes required Filled
- Misassigned localization leads to wrong conclusions about how proteins work.
- Mislabelled annotations propagate through many databases.
Standards and interfaces required Filled
- The Gene Ontology Cellular Component ontology, maintained by the Gene Ontology Consortium, provides standardized terms for annotating cellular compartments and the locations of gene products.
Context of use required Filled
- Cellular compartments are studied in cell biology to explain how cells separate biochemical activities and maintain distinct local environments.
- They provide a framework for interpreting microscopy, molecular localization and transport between regions of a cell.
Sources Filled
- Wikidata item Q189055: cellular compartment - identity and sense of the item
- Wikipedia: Cellular compartment - general description of the item
Open questions
- Does this registry entry intend a physical intracellular region, a cellular-component classification concept or a process-oriented abstraction, and how should its ACT / ACT.PRC placement be interpreted?
- Which authoritative definitions should govern inclusion of membrane-free condensates, diffuse reaction zones and membrane subdomains?
- Which existing Vercy models already own organelles, intracellular regions or compartmentalisation, and where should this entry link rather than duplicate them?
- What evidence and observation timescale are sufficient to distinguish a maintained compartment from transient enrichment in different cellular contexts?
- Which conventions should determine whether bounding membranes belong to the compartment and whether identity persists through division or merging?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q189055/spec.json