Ignicoccus hospitalis
E215224
Ignicoccus hospitalis is a hyperthermophilic archaeon that thrives in extremely hot, sulfur-rich environments and is notable for its unique cell envelope and symbiotic association with the nanoarchaeon Nanoarchaeum equitans.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ignicoccus hospitalis canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1891867 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Ignicoccus hospitalis Context triple: [Crenarchaeota, hasRepresentative, Ignicoccus hospitalis]
-
A.
Sulfolobus solfataricus
Sulfolobus solfataricus is a thermoacidophilic archaeon commonly found in volcanic hot springs, widely used as a model organism for studying extremophile biology and archaeal molecular processes.
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B.
Korarchaeota
Korarchaeota are a deeply branching, poorly understood lineage of Archaea typically found in high-temperature environments and known mainly from environmental DNA rather than cultivated representatives.
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C.
Crenarchaeota
Crenarchaeota is a major phylum of Archaea that includes many thermophilic and chemolithoautotrophic microorganisms commonly found in extreme environments such as hot springs and deep-sea hydrothermal vents.
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D.
Archaea
Archaea are a domain of single-celled microorganisms distinct from bacteria and eukaryotes, often known for thriving in extreme environments and possessing unique biochemical and genetic features.
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E.
Nanoarchaeota
Nanoarchaeota is a phylum of ultra-small, symbiotic archaea known for their reduced genomes and association with other archaeal hosts in extreme environments.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Ignicoccus hospitalis Target entity description: Ignicoccus hospitalis is a hyperthermophilic archaeon that thrives in extremely hot, sulfur-rich environments and is notable for its unique cell envelope and symbiotic association with the nanoarchaeon Nanoarchaeum equitans.
-
A.
Sulfolobus solfataricus
Sulfolobus solfataricus is a thermoacidophilic archaeon commonly found in volcanic hot springs, widely used as a model organism for studying extremophile biology and archaeal molecular processes.
-
B.
Korarchaeota
Korarchaeota are a deeply branching, poorly understood lineage of Archaea typically found in high-temperature environments and known mainly from environmental DNA rather than cultivated representatives.
-
C.
Crenarchaeota
Crenarchaeota is a major phylum of Archaea that includes many thermophilic and chemolithoautotrophic microorganisms commonly found in extreme environments such as hot springs and deep-sea hydrothermal vents.
-
D.
Archaea
Archaea are a domain of single-celled microorganisms distinct from bacteria and eukaryotes, often known for thriving in extreme environments and possessing unique biochemical and genetic features.
-
E.
Nanoarchaeota
Nanoarchaeota is a phylum of ultra-small, symbiotic archaea known for their reduced genomes and association with other archaeal hosts in extreme environments.
- F. None of above. chosen
Statements (43)
| Predicate | Object |
|---|---|
| instanceOf |
archaeon
ⓘ
hyperthermophilic archaeon ⓘ |
| associationWith | Nanoarchaeum equitans ⓘ |
| ATPGenerationSite | outer membrane ⓘ |
| carbonSource | carbon dioxide ⓘ |
| cellDiameter | approximately 1 to 2 micrometers ⓘ |
| cellDivisionSite | inner membrane ⓘ |
| cellEnvelope | unique double-membrane cell envelope ⓘ |
| cellShape | coccoid ⓘ |
| domain | Archaea ⓘ |
| electronAcceptor | elemental sulfur ⓘ |
| electronDonor | hydrogen ⓘ |
| energySource | chemolithoautotrophic sulfur metabolism ⓘ |
| environmentalCondition |
high sulfur concentration
ⓘ
high temperature ⓘ marine hydrothermal vent fluids ⓘ |
| firstDescribedIn | early 2000s ⓘ |
| foundIn |
Kolbeinsey Ridge hydrothermal vents near Iceland
ⓘ
submarine hydrothermal systems ⓘ |
| genomeType | circular double-stranded DNA ⓘ |
| genus | Ignicoccus ⓘ |
| gramStain | Gram-negative-like envelope architecture ⓘ |
| habitat |
hydrothermal vent environments
ⓘ
sulfur-rich environments ⓘ |
| hostOf | Nanoarchaeum equitans ⓘ |
| innerMembrane | cytoplasmic membrane separated by large periplasmic space ⓘ |
| lifestyle | free-living host for ectosymbiont Nanoarchaeum equitans ⓘ |
| lipidComposition | ether-linked archaeal membrane lipids ⓘ |
| metabolism | anaerobic ⓘ |
| motility | non-motile ⓘ |
| notableFeature |
energized outer membrane used for ATP synthesis
ⓘ
model organism for studying archaeal cell biology ⓘ |
| optimalGrowthTemperature | around 90 to 98 °C ⓘ |
| outerMembrane | energized outer cellular membrane ⓘ |
| oxygenRequirement | strictly anaerobic ⓘ |
| periplasmicSpace | unusually large periplasmic compartment ⓘ |
| phylum | Crenarchaeota ⓘ |
| reproduction | binary fission ⓘ |
| researchUse |
studies of energy metabolism in Archaea
ⓘ
studies of host–symbiont interactions with Nanoarchaeum equitans ⓘ |
| symbioticRelationshipType | obligate symbiosis with Nanoarchaeum equitans ⓘ |
| taxonRank | species ⓘ |
| temperaturePreference | hyperthermophilic ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Ignicoccus hospitalis Description of subject: Ignicoccus hospitalis is a hyperthermophilic archaeon that thrives in extremely hot, sulfur-rich environments and is notable for its unique cell envelope and symbiotic association with the nanoarchaeon Nanoarchaeum equitans.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.