Component
gamma-Butyrobetaine hydroxylase / BBOX1
Independent protein record; interpretation is limited by each linked claim and its study context.
2 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)
Human tissue assays detected gamma-butyrobetaine-to-carnitine activity in liver, kidney and brain, but not heart or skeletal muscle; the earlier steps were detected in all five tissues.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Human tissue homogenate enzyme assays.
- limitations
- Detection limits, developmental stage and sampled tissues constrain the result; not an absolute modern atlas.
- nutrient_topic
- L-Carnitine collection; isomer, preparation, species, exposure and manipulation remain explicit. · L-Carnitine
- plain_language
- Some tissues rely on importing the finished molecule.
- primary_references
- Tissue distribution of carnitine biosynthetic enzymes in man. · 1980 · https://pubmed.ncbi.nlm.nih.gov/6770910/ · DOI 10.1016/0304-4165(80)90133-6
L-Carnitine: synthesis, acyl-group transport, fuel selection and nutrient interactions (2026-09-19) · lines 26–32
AI-assisted research curation; primary-abstract references and experimental limitations individually identified. Not publisher full text. · supports · Human tissue homogenate enzyme assays. · source_derived_draft · unverified_draft
## l-carnitine-tissue-synthesis Some tissues rely on importing the finished molecule. Human tissue assays detected gamma-butyrobetaine-to-carnitine activity in liver, kidney and brain, but not heart or skeletal muscle; the earlier steps were detected in all five tissues. Model: Human tissue homogenate enzyme assays. Limitations: Detection limits, developmental stage and sampled tissues constrain the result; not an absolute modern atlas. Evidence access: Primary abstract Tissue distribution of carnitine biosynthetic enzymes in man. · 1980 · https://pubmed.ncbi.nlm.nih.gov/6770910/ · DOI 10.1016/0304-4165(80)90133-6
Complete structured claim and evidenceBBOX1 hydroxylates gamma-butyrobetaine to L-carnitine using oxygen, 2-oxoglutarate and ferrous iron.
Experimental context and source evidence
- experimental_model
- Human cDNA expression and human tissue activity assays
- limitations
- Do not generalize full carnitine-synthesis capacity to every tissue.
- organism
- Homo sapiens
- plain_language
- BBOX1 completes carnitine synthesis.
- primary_references
- [vaz1998] Carnitine biosynthesis: identification of the cDNA encoding human gamma-butyrobetaine hydroxylase (1998). https://pubmed.ncbi.nlm.nih.gov/9753662/ DOI: 10.1006/bbrc.1998.9343 [rebouche1980] Tissue distribution of carnitine biosynthetic enzymes in man (1980). https://pubmed.ncbi.nlm.nih.gov/6770910/ DOI: 10.1016/0304-4165(80)90133-6
- tissue_or_cell_type
- Kidney, liver and brain; abundance differs
L-Lysine: mechanism-first literature curation (2026-09-17) · lines 207–216
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Human cDNA expression and human tissue activity assays · source_derived_draft · unverified_draft
### bbox1-carnitine-formation BBOX1 hydroxylates gamma-butyrobetaine to L-carnitine using oxygen, 2-oxoglutarate and ferrous iron. Plain language: BBOX1 completes carnitine synthesis. Condition category: normal organism: Homo sapiens tissue_or_cell_type: Kidney, liver and brain; abundance differs experimental_model: Human cDNA expression and human tissue activity assays limitations: Do not generalize full carnitine-synthesis capacity to every tissue. [vaz1998] Carnitine biosynthesis: identification of the cDNA encoding human gamma-butyrobetaine hydroxylase (1998). https://pubmed.ncbi.nlm.nih.gov/9753662/ DOI: 10.1006/bbrc.1998.9343 [rebouche1980] Tissue distribution of carnitine biosynthetic enzymes in man (1980). https://pubmed.ncbi.nlm.nih.gov/6770910/ DOI: 10.1016/0304-4165(80)90133-6
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.