thermophilic
METPO:1000616 · CLASS · REVIEWED
A temperature preference in which growth is favored at elevated temperatures, typically ≥45 °C.
Thermophilic heat-adaptation mechanism
Edge evidence
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high temperature
selects for
thermophilic
METPO:2007401High-temperature environments select for thermophilic growth capacity.
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DOI:10.1016/s0300-9629(97)00003-0adapted to environments of high temperature
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high temperature
increases
membrane proton permeability
RO:0002213Elevated temperature increases proton permeability of the cytoplasmic membrane.
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DOI:10.1016/s0300-9629(97)00003-0proton permeability ... increase with the temperature
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membrane lipid composition
limits
membrane proton permeability
RO:0002212Lipid composition changes can reduce high-temperature membrane leakiness.
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DOI:10.1016/s0300-9629(97)00003-0changing the lipid composition
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thermostable proteins
enables
thermophilic
RO:0002327Thermostable proteins retain function during elevated-temperature growth.
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DOI:10.1128/MMBR.65.1.1-43.2001resistant to irreversible inactivation at high temperatures
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energy-transducing enzymes
enables
thermophilic
RO:0002327Adapted energy-transducing enzymes support growth at elevated temperature.
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DOI:10.1016/s0300-9629(97)00003-0energy transducing enzymes
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reverse gyrase
introduces
positive DNA supercoiling
Reverse gyrase introduces positive supercoils into thermophile DNA.
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DOI:10.1264/jsme2.me23087
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positive DNA supercoiling
limits
DNA melting
RO:0002212Positive DNA supercoiling limits thermal DNA melting, protecting genome integrity.
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DOI:10.1264/jsme2.me23087
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reverse gyrase
mediates
genome integrity maintenance
Reverse gyrase mediates DNA repair and genome-integrity maintenance in thermophiles.
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DOI:10.1264/jsme2.me23087
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group II chaperonin (thermosome)
refolds
denatured proteins
The group II chaperonin (thermosome) refolds denatured proteins in an ATP-dependent manner.
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DOI:10.1128/mbio.03593-22
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tetraether lipid cyclopentane ring number
increases
membrane rigidity
RO:0002213Increased cyclopentane ring number in tetraether lipids increases membrane condensation and rigidity.
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DOI:10.3389/frbis.2023.1338019
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Provenance
- Source
- METPO (2025-11-25)
- Definition source
- DOI:10.1016/s0300-9629(97)00003-0
Parent traits (1)
kg-microbe context
Matched 1 kg-microbe node via direct_metpo.
METPO:1000616[+21.170, -11.999, -10.457, +4.736, …]
Nearest neighbors in embedding space
- environment temperature optimum high 0.477
- physiology chemolithotrophic 0.300
- physiology chemolithoautotrophic 0.282
- environment hyperthermophilic 0.276
- environment extreme hyperthermophilic 0.267
- environment temperature preference 0.262
- physiology autotrophic 0.262
- environment temperature range high 0.248
Curation history
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·
SEEDED_FROM_METPO · seed_from_metpo
imported from data/raw/metpo.owl (CLASS)
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·
CURATED_WITH_ORGANISM_EXAMPLE · codex
Added Geobacillus stearothermophilus organism example with PMID-backed evidence.
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·
CURATED_WITH_LITERATURE · codex
Added DOI-backed thermophily causal graph for membrane permeability, lipid adaptation, thermostable proteins, and energy transduction.
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002327×1).
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2007401×1).
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·
RENAME_PREDICATE_LABELS · claude
Renamed 1 causal-edge predicate label(s) to align with existing groundings: supports → enables ×1.
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002327×1).
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002213×1, RO:0002212×1).
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·
GROUND_CAUSAL_NODES · claude
Grounded 1 causal-node grounding field(s) via mappings/node_grounding.tsv (PATO:0001305×1).
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·
REMOVE_REDUNDANT_SYNONYM · claude
Removed 1 synonym(s) whose text duplicated the label (seeder redundancy; no information lost).
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·
ENRICH_CAUSAL_GRAPH · claude
Added 5 evidence-backed generic edges (8 new nodes) from the deep-research report.
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002212×1, RO:0002213×1).
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·
GROUND_CAUSAL_NODES · claude
Grounded 1 causal-node grounding field(s) via mappings/node_grounding.tsv (UniProtKB:A0A088E825×1).