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

DOI-backed graph linking thermophile membrane and protein thermostability adaptation to a temperature optimum above 40 °C.

Temperature-optimum-high thermophile setpoint Interactive directed graph showing evidence-backed causal relationships for temperature optimum high.

Edge evidence

  • hot environment selects for thermophile protein thermostability METPO:2007401

    Hot environments select for thermophile thermostable machinery.

    • DOI:10.1016/s0300-9629(97)00003-0 adapted to environments of high temperature Supports hot environments as the context for thermophile optima.
  • thermophile protein thermostability produces temperature optimum high METPO:2000202

    Thermophile thermostability yields a >40 °C optimum.

    • DOI:10.1128/MMBR.65.1.1-43.2001 resistant to irreversible inactivation at high temperatures Supports thermostability as the mechanism producing thermophile optima.
  • temperature optimum high is a temperature optimum rdfs:subClassOf

    Temperature optimum high is a quantitative bin of the temperature-optimum phenotype.

    • DOI:10.1016/s0300-9629(97)00003-0 adapted to environments of high temperature Supports the >40 °C optimum as a value within the temperature-optimum distribution.
  • reverse gyrase positively regulates positive DNA supercoiling

    Reverse gyrase introduces positive supercoils into DNA, a thermophile hallmark.

    • DOI:10.1264/jsme2.me23087 Reverse gyrase introduces positive supercoils into DNA and is a hallmark of many thermophiles.
  • positive DNA supercoiling reduces DNA melting at high temperature METPO:2000017

    Positive supercoiling limits DNA melting and prevents thermal denaturation.

    • DOI:10.1264/jsme2.me23087 Reverse gyrase / positive supercoiling proposed to limit DNA melting and prevent thermal denaturation.
  • nucleoid-associated proteins increases genome thermostability RO:0002213

    Nucleoid-associated proteins enhance DNA/genome thermostability.

    • DOI:10.1264/jsme2.me23087 NAPs affect 3D genome organization and enhance DNA thermostability; abundance correlates with growth temperature.
  • small heat shock proteins prevents heat-induced protein aggregation RO:0002212

    Small heat shock proteins bind denaturing proteins to prevent heat-induced aggregation.

    • DOI:10.1128/mbio.03593-22 Small HSPs bind denaturing proteins and protect them from aggregation under heat stress.
  • thermosome (group II chaperonin) refolds refolding of denatured proteins

    Thermosome refolds denatured proteins in an ATP-dependent manner.

    • DOI:10.1128/mbio.03593-22 Thermosome refolds denatured proteins in an ATP-dependent manner.
  • altered membrane lipid composition stabilizes cytoplasmic membrane thermostability

    Altered membrane lipid composition stabilizes the cytoplasmic membrane at high temperature.

    • DOI:10.1128/mbio.03593-22 Heat shock leads to an altered lipid composition of the cytoplasmic membrane; unique membrane composition is a recognized thermophile adaptation.
  • hydrophobic and charged amino acid enrichment increases thermophile protein thermostability RO:0002213

    Enrichment in hydrophobic and charged amino acids increases protein thermostability.

    • DOI:10.1128/mbio.02174-23 Thermophiles show enrichment in hydrophobic and charged amino acids contributing to intrinsic protein thermostability.

Provenance

Source
METPO (2025-11-25)
Definition source
DOI:10.1016/s0300-9629(97)00003-0

Synonyms (2)

  • Thermophile EXACT_SYNONYM · metpo.owl
  • TO_>40 RELATED_SYNONYM · metpo.owl

kg-microbe context

Matched 1 kg-microbe node via direct_metpo.

  • METPO:1000447 [+1.114, +1.991, -0.944, +1.377, …]

512-dim DeepWalkSkipGramEnsmallen embedding from kg-microbe (2026-04-25).

Nearest neighbors in embedding space

Top-8 cosine-similar METPO traits from the 2026-04-25 deepwalk (512-D).

Curation history

  1. · SEEDED_FROM_METPO · seed_from_metpo

    imported from data/raw/metpo.owl (CLASS)

  2. · CURATED_CAUSAL_GRAPH · claude

    Added DOI-backed definition and causal graph linking thermophile thermostability to the temperature-optimum-high bin.

  3. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2000202×1, rdfs:subClassOf×1).

  4. · GROUND_CAUSAL_PREDICATES · claude

    Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2007401×1).

  5. · ENRICH_CAUSAL_GRAPH · claude

    Added 7 evidence-backed generic edges (12 new nodes) from the deep-research report.

  6. · 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).

  7. · GROUND_CAUSAL_NODES · claude

    Grounded 1 causal-node grounding field(s) via mappings/node_grounding.tsv (UniProtKB:A0A088E825×1).