Component
Cytochrome b5 preparation used in the 2005 CYP2A6 kinetic experiment; species not resolved in abstract
Cytochrome b5 preparation used in the 2005 CYP2A6 kinetic experiment; species not resolved in abstract. Species, exposure and limitations are retained in each linked claim.
1 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What it acts on
Cytochrome b5 increased CYP2A6-mediated coumarin hydroxylation; kinetic experiments supported electron transfer to the oxygenated enzyme.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/coumarin-research/15665333.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "79f42118f337ffe818b92138941685126173355131f8e12ca7cae9a437800a5b", "start_char": 0, "end_char": 1689, "text_sha256": "79f42118f337ffe818b92138941685126173355131f8e12ca7cae9a437800a5b"}
- experimental_model
- Purified human CYP2A6 kinetic experiments
- exposure
- Coumarin oxidation; stopped-flow and steady-state kinetics, selected measures at 23 C
- limitations
- Biochemical rates do not measure whole-body clearance; accessory b5 species is not specified in the abstract.
- nutrient_topic
- Coumarin research collection; topical membership is not evidence of a direct dietary effect. · Coumarin
- organism
- Human CYP2A6 with reconstituted accessory proteins
- plain_language
- An accessory electron carrier improved the enzyme reaction.
- primary_references
- [coumarin-p15665333] Kinetic analysis of oxidation of coumarins by human cytochrome P450 2A6. (2005). https://pubmed.ncbi.nlm.nih.gov/15665333/ DOI: 10.1074/jbc.m411019200
- tissue_or_cell_type
- Reconstituted enzyme system
Coumarin: metabolism, signaling and nutrient connections (2026-09-17) · lines 150–161
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Purified human CYP2A6 kinetic experiments · source_derived_draft · unverified_draft
### coumarin-b5-enhancement Cytochrome b5 increased CYP2A6-mediated coumarin hydroxylation; kinetic experiments supported electron transfer to the oxygenated enzyme. Condition category: normal nutrient_topic: Coumarin research collection; topical membership is not evidence of a direct dietary effect. plain_language: An accessory electron carrier improved the enzyme reaction. organism: Human CYP2A6 with reconstituted accessory proteins tissue_or_cell_type: Reconstituted enzyme system experimental_model: Purified human CYP2A6 kinetic experiments limitations: Biochemical rates do not measure whole-body clearance; accessory b5 species is not specified in the abstract. exposure: Coumarin oxidation; stopped-flow and steady-state kinetics, selected measures at 23 C evidence_span: {"source_cache": "artifacts/coumarin-research/15665333.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "79f42118f337ffe818b92138941685126173355131f8e12ca7cae9a437800a5b", "start_char": 0, "end_char": 1689, "text_sha256": "79f42118f337ffe818b92138941685126173355131f8e12ca7cae9a437800a5b"} [coumarin-p15665333] Kinetic analysis of oxidation of coumarins by human cytochrome P450 2A6. (2005). https://pubmed.ncbi.nlm.nih.gov/15665333/ DOI: 10.1074/jbc.m411019200
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.