carboxydotrophic
METPO:1000633 · CLASS · REVIEWED
A trophic type in which an organism derives energy from the oxidation of carbon monoxide.
Carboxydotrophic carbon monoxide oxidation mechanism
Edge evidence
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carboxydotrophic
uses energy substrate
carbon monoxide
Carboxydotrophs use carbon monoxide to support growth or metabolism.
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DOI:10.1038/nrmicro1595CO supports the growth and metabolism
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carbon monoxide dehydrogenase
oxidizes
carbon monoxide
METPO:2000016CODH catalyzes carbon monoxide oxidation.
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DOI:10.1038/nrmicro1595CO dehydrogenase (CODH), to oxidize CO
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molybdenum hydroxylase
enzyme class for
carbon monoxide dehydrogenase
Aerobic CO oxidizers use a molybdenum hydroxylase CODH.
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DOI:10.1038/nrmicro1595use a molybdenum hydroxylase
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carbon monoxide
oxidized to
carbon dioxide
METPO:2007405CO oxidation yields carbon dioxide.
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DOI:10.1007/s00775-018-1541-0oxidation of CO to CO2
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carbon monoxide dehydrogenase
feeds electrons into
respiratory chain
METPO:2007402CO oxidation is coupled to respiratory electron transfer.
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DOI:10.1111/j.1574-6968.1986.tb01858.xbranched respiratory chain
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respiratory chain
depends on
CO-insensitive terminal oxidase
RO:0002502CO-utilizing bacteria use a CO-insensitive terminal oxidase branch.
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DOI:10.1111/j.1574-6968.1986.tb01858.xCO-insensitive terminal oxidase
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respiratory chain
generates
proton motive force
biolink:producesRespiratory CO oxidation conserves energy as proton motive force.
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DOI:10.1111/j.1574-6968.1986.tb01858.xpmf-driven reversed electron transfer
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proton motive force
drives formation of
reduced pyridine nucleotides
biolink:producesReverse electron transfer can form reduced pyridine nucleotides.
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DOI:10.1111/j.1574-6968.1986.tb01858.xformation of reduced pyridine nucleotides
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Ni,Fe-carbon monoxide dehydrogenase
has quality
oxygen sensitivity
Ni,Fe-CODHs are oxygen sensitive, restricting them to anaerobic carboxydotrophs.
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DOI:10.1128/jb.00332-22
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molybdenum hydroxylase
has quality
oxygen tolerance
Cu,Mo-CODHs are O2-tolerant, enabling aerobic CO metabolism.
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DOI:10.1128/jb.00332-22
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cox operon
encodes
molybdenum hydroxylase
biolink:encodescox operons encode the coxS/coxM/coxL aerobic Mo-CODH subunits.
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DOI:10.1128/jb.00332-22
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coo operon
encodes
Ni,Fe-carbon monoxide dehydrogenase
biolink:encodescoo operons encode Ni,Fe-CODH plus accessory proteins for energy conservation.
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DOI:10.1128/jb.00332-22
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CooA
activates transcription of
coo operon
CO binding to CooA Fe(II)-heme allosterically activates coo operon transcription.
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DOI:10.1128/jb.00332-22
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RcoM
regulates
cox operon
RO:0002211RcoM is a high-affinity CO sensor regulating aerobic coxMSL genes.
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DOI:10.1128/jb.00332-22
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proton motive force
powers
ATP synthase
The ion motive force generated by CO oxidation drives ATP synthase.
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DOI:10.1186/s40643-023-00705-9
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molybdenum hydroxylase
coupled to reduction of
dioxygen
Mo-CODH-mediated CO oxidation is coupled to O2 reduction aerobically.
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DOI:10.1101/2023.01.17.524042
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Provenance
- Source
- METPO (2025-11-25)
- Definition source
- DOI:10.1038/nrmicro1595
Parent traits (1)
kg-microbe context
Matched 1 kg-microbe node via direct_metpo.
METPO:1000633[-2.124, -2.915, -5.468, -0.095, …]
Nearest neighbors in embedding space
- physiology hydrogenotrophic 0.960
- physiology photolithoautotrophic 0.958
- physiology trophic type 0.956
- physiology photoorganoheterotrophic 0.900
- physiology lithoautotrophic 0.899
- physiology photolithotrophic 0.884
- physiology chemoautotrophic 0.871
- physiology mixotrophic 0.869
Curation history
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SEEDED_FROM_METPO · seed_from_metpo
imported from data/raw/metpo.owl (CLASS)
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ADDED_CAUSAL_GRAPH · codex
Added DOI-backed causal graph for CODH-mediated carbon monoxide oxidation, respiratory-chain coupling, and energy conservation.
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GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2000016×1).
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GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (biolink:produces×1).
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GROUND_CAUSAL_PREDICATES · claude
Grounded 2 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (METPO:2007405×1, METPO:2007402×1).
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GROUND_CAUSAL_NODES · claude
Grounded 1 causal-node grounding field(s) via mappings/node_grounding.tsv (GO:0022904×1).
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GROUND_CAUSAL_NODES · claude
Grounded 1 causal-node grounding field(s) via mappings/node_grounding.tsv (METPO:1007500×1).
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GROUND_CAUSAL_NODES · claude
Grounded 2 causal-node grounding field(s) via mappings/node_grounding.tsv (UniProtKB:A0A061JSS8×1, UniProtKB:A0A099I9V3×1).
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RETYPE_CAUSAL_NODES · claude
Re-typed 1 causal-node node_type field(s) to align with CausalNodeTypeEnum semantics: proton motive force: BIOLOGICAL_PROCESS → STATE ×1.
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RENAME_PREDICATE_LABELS · claude
Renamed 1 causal-edge predicate label(s) to align with existing groundings: requires → depends on ×1.
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GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (RO:0002502×1).
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GROUND_CAUSAL_PREDICATES · claude
Grounded 1 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (biolink:produces×1).
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ENRICH_CAUSAL_GRAPH · claude
Added 8 evidence-backed generic edges (9 new nodes) from the deep-research report.
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GROUND_CAUSAL_PREDICATES · claude
Grounded 3 causal-edge predicate_id field(s) via mappings/predicate_grounding.tsv (biolink:encodes×2, RO:0002211×1).
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GROUND_CAUSAL_NODES · claude
Grounded 1 causal-node grounding field(s) via mappings/node_grounding.tsv (UniProtKB:A0A415TT77×1).
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GROUND_CAUSAL_NODES · claude
Grounded 1 causal-node grounding field(s) via mappings/node_grounding.tsv (CHEBI:15379×1).
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GROUND_CAUSAL_NODES · claude
Grounded 2 causal-node grounding field(s) via mappings/node_grounding.tsv (UniProtKB:A0A1D7QXJ2×1, UniProtKB:A0A0D5N3T8×1).