temperature optimum high
METPO:1000447 · CLASS · REVIEWED
A temperature optimum phenotype with the best-growth ambient temperature above approximately 40 °C, characteristic of thermophilic physiology.
Temperature-optimum-high thermophile setpoint
Edge evidence
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hot environment
selects for
thermophile protein thermostability
METPO:2007401Hot environments select for thermophile thermostable machinery.
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DOI:10.1016/s0300-9629(97)00003-0adapted to environments of high temperature
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thermophile protein thermostability
produces
temperature optimum high
METPO:2000202Thermophile thermostability yields a >40 °C optimum.
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DOI:10.1128/MMBR.65.1.1-43.2001resistant to irreversible inactivation at high temperatures
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temperature optimum high
is a
temperature optimum
rdfs:subClassOfTemperature optimum high is a quantitative bin of the temperature-optimum phenotype.
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DOI:10.1016/s0300-9629(97)00003-0adapted to environments of high temperature
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reverse gyrase
positively regulates
positive DNA supercoiling
Reverse gyrase introduces positive supercoils into DNA, a thermophile hallmark.
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DOI:10.1264/jsme2.me23087
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positive DNA supercoiling
reduces
DNA melting at high temperature
METPO:2000017Positive supercoiling limits DNA melting and prevents thermal denaturation.
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DOI:10.1264/jsme2.me23087
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nucleoid-associated proteins
increases
genome thermostability
RO:0002213Nucleoid-associated proteins enhance DNA/genome thermostability.
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DOI:10.1264/jsme2.me23087
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small heat shock proteins
prevents
heat-induced protein aggregation
RO:0002212Small heat shock proteins bind denaturing proteins to prevent heat-induced aggregation.
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DOI:10.1128/mbio.03593-22
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thermosome (group II chaperonin)
refolds
refolding of denatured proteins
Thermosome refolds denatured proteins in an ATP-dependent manner.
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DOI:10.1128/mbio.03593-22
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altered membrane lipid composition
stabilizes
cytoplasmic membrane thermostability
Altered membrane lipid composition stabilizes the cytoplasmic membrane at high temperature.
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DOI:10.1128/mbio.03593-22
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hydrophobic and charged amino acid enrichment
increases
thermophile protein thermostability
RO:0002213Enrichment in hydrophobic and charged amino acids increases protein thermostability.
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DOI:10.1128/mbio.02174-23
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Provenance
- Source
- METPO (2025-11-25)
- Definition source
- DOI:10.1016/s0300-9629(97)00003-0
Parent traits (1)
Synonyms (2)
- Thermophile
- TO_>40
kg-microbe context
Matched 1 kg-microbe node via direct_metpo.
METPO:1000447[+1.114, +1.991, -0.944, +1.377, …]
Nearest neighbors in embedding space
- environment temperature range high 0.561
- environment thermophilic 0.477
- environment pH range mid1 0.447
- environment pH range mid2 0.446
- environment pH range low 0.444
- environment temperature delta mid2 0.434
- environment temperature delta high 0.429
- environment temperature optimum 0.428
Curation history
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·
SEEDED_FROM_METPO · seed_from_metpo
imported from data/raw/metpo.owl (CLASS)
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CURATED_CAUSAL_GRAPH · claude
Added DOI-backed definition and causal graph linking thermophile thermostability to the temperature-optimum-high bin.
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2000202×1, rdfs:subClassOf×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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·
ENRICH_CAUSAL_GRAPH · claude
Added 7 evidence-backed generic edges (12 new nodes) from the deep-research report.
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·
GROUND_CAUSAL_PREDICATES · claude
Grounded 4 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002213×2, METPO:2000017×1, RO:0002212×1).
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·
GROUND_CAUSAL_NODES · claude
Grounded 1 causal-node grounding field(s) via mappings/node_grounding.tsv (UniProtKB:A0A088E825×1).