Component
3-Methylglutaconyl-CoA
3-Methylglutaconyl-CoA. 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.
Where it participates (unsigned role)
MCC converts 3-methylcrotonyl-CoA to 3-methylglutaconyl-CoA in the leucine breakdown pathway using biotin.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/biotin-research/21918059.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "5cf1d7e25ae7bdfeb2ac3225cee8e4e660723d5197fc057f63327b3ad9eb3aaf", "start_char": 0, "end_char": 1723, "text_sha256": "5cf1d7e25ae7bdfeb2ac3225cee8e4e660723d5197fc057f63327b3ad9eb3aaf"}
- experimental_model
- Two human egg-white biotin-depletion cohorts with leucine challenges
- exposure
- 28-day depletion in cohorts of 5 and 7 adults
- limitations
- Biomarker challenge study; the core MCC reaction is pathway background, not a new structural discovery.
- nutrient_topic
- Biotin research collection; topical membership is not evidence of a direct dietary effect. · Biotin
- organism
- Homo sapiens
- plain_language
- Biotin helps process a carbon intermediate produced while breaking down leucine.
- primary_references
- [b7-p21918059] Urinary excretion of 3-hydroxyisovaleric acid and 3-hydroxyisovaleryl carnitine increases in response to a leucine challenge in marginally biotin-deficient humans. (2011). https://pubmed.ncbi.nlm.nih.gov/21918059/ DOI: 10.3945/jn.111.146126
- tissue_or_cell_type
- Leucine metabolism and urine
Biotin: carboxylases, recycling, deficiency and nutrient interactions (2026-09-17) · lines 793–804
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Two human egg-white biotin-depletion cohorts with leucine challenges · source_derived_draft · unverified_draft
### b7-mcc-reaction MCC converts 3-methylcrotonyl-CoA to 3-methylglutaconyl-CoA in the leucine breakdown pathway using biotin. Condition category: normal nutrient_topic: Biotin research collection; topical membership is not evidence of a direct dietary effect. plain_language: Biotin helps process a carbon intermediate produced while breaking down leucine. organism: Homo sapiens tissue_or_cell_type: Leucine metabolism and urine experimental_model: Two human egg-white biotin-depletion cohorts with leucine challenges limitations: Biomarker challenge study; the core MCC reaction is pathway background, not a new structural discovery. exposure: 28-day depletion in cohorts of 5 and 7 adults evidence_span: {"source_cache": "artifacts/biotin-research/21918059.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "5cf1d7e25ae7bdfeb2ac3225cee8e4e660723d5197fc057f63327b3ad9eb3aaf", "start_char": 0, "end_char": 1723, "text_sha256": "5cf1d7e25ae7bdfeb2ac3225cee8e4e660723d5197fc057f63327b3ad9eb3aaf"} [b7-p21918059] Urinary excretion of 3-hydroxyisovaleric acid and 3-hydroxyisovaleryl carnitine increases in response to a leucine challenge in marginally biotin-deficient humans. (2011). https://pubmed.ncbi.nlm.nih.gov/21918059/ DOI: 10.3945/jn.111.146126
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.