Reference

Evidence

CompoundsSubstances with curated findings
OutcomesMeasured endpoints
ProteinsTransporters and enzymes
InteractionsPairs that share biology
PapersEvery paper a finding cites
ArticlesReadings of the evidence

Reference layer

PathwaysReactions grouped under one name
ProcessesWhat proteins are annotated as doing
AnatomyTissues, by what is expressed there
Cell typesCells, by what is expressed there
OrganismsSpecies a compound is prepared from
MaterialsSubstances that are not one molecule
AssessmentsRegulatory determinations, transcribed

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Atlas Graph Access Compounds Outcomes Proteins Interactions Papers Articles Pathways Processes Anatomy Cell types Organisms Materials Assessments

Reaction

CHEBI:537519+reduced 2[4Fe-4S]-[ferredoxin]+hydrogen sulfide+3hydronoxidized 2[4Fe-4S]-[ferredoxin]+L-homocysteine+water

Direction not asserted · Balance undeterminable

Inferred

Reference data, not a finding. Evidence key

Rhea RHEA:58412·2026-08-19·CC BY 4.0Reference data

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Catalyst

Computational infrastructure for human biology, built on a provenance-aware knowledge graph. Findings retain their sources; research and simulation are the next layers.

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Reference layer

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Processes
Anatomy
Cell types
Organisms
Materials
Assessments

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A reference for what the literature reports. Not medical advice.

Reaction

CHEBI:537519+reduced 2[4Fe-4S]-[ferredoxin]+hydrogen sulfide+3hydronoxidized 2[4Fe-4S]-[ferredoxin]+L-homocysteine+water

Direction not asserted · Balance undeterminable

Inferred

Reference data, not a finding. Evidence key

Rhea RHEA:58412·2026-08-19·CC BY 4.0Reference data

CHEBI:537519+reduced 2[4Fe-4S]-[ferredoxin]+hydrogen sulfide+3hydron?oxidized 2[4Fe-4S]-[ferredoxin]+L-homocysteine+water

CHEBI:537519+reduced 2[4Fe-4S]-[ferredoxin]+hydrogen sulfide+3hydron?oxidized 2[4Fe-4S]-[ferredoxin]+L-homocysteine+water

CHEBI:537519+reduced 2[4Fe-4S]-[ferredoxin]+hydrogen sulfide+3hydronoxidized 2[4Fe-4S]-[ferredoxin]+L-homocysteine+water

CHEBI:537519+reduced 2[4Fe-4S]-[ferredoxin]+hydrogen sulfide+3hydronoxidized 2[4Fe-4S]-[ferredoxin]+L-homocysteine+water