Component
Mitochondrial folate polyglutamate export
Transfer of intact folate polyglutamates from mitochondria to cytosol.
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 acts on it
Tracer experiments detected no intact folate-polyglutamate transfer from mitochondria to cytosol in the tested human-FPGS-reconstituted hamster cells.
Experimental context and source evidence
- experimental_model
- Human FPGS isoforms in Chinese hamster AUXB1 cells
- exposure
- Compartment-specific FPGS induction and tracer chase
- limitations
- Detection-limited result, not proof of universal impermeability.
- nutrient_topic
- Folate and folic acid research collection; topical membership is not evidence of a direct dietary effect. · Folate (vitamin B9)
- organism
- Human enzyme in Cricetulus griseus cells
- plain_language
- Stored mitochondrial folates did not measurably replenish the cytosol.
- primary_references
- [lawrence2014] Mammalian mitochondrial and cytosolic folylpolyglutamate synthetase maintain the subcellular compartmentalization of folates (2014). https://pubmed.ncbi.nlm.nih.gov/25164808/ DOI: 10.1074/jbc.m114.593244
- tissue_or_cell_type
- AUXB1 mitochondrial and cytosolic fractions
Folate and folic acid: mechanisms, deficiency and nutrient interactions (2026-09-17) · lines 303–313
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Human FPGS isoforms in Chinese hamster AUXB1 cells · source_derived_draft · unverified_draft
### folate-polyglutamate-no-mito-export Tracer experiments detected no intact folate-polyglutamate transfer from mitochondria to cytosol in the tested human-FPGS-reconstituted hamster cells. Condition category: normal nutrient_topic: Folate and folic acid research collection; topical membership is not evidence of a direct dietary effect. plain_language: Stored mitochondrial folates did not measurably replenish the cytosol. organism: Human enzyme in Cricetulus griseus cells tissue_or_cell_type: AUXB1 mitochondrial and cytosolic fractions experimental_model: Human FPGS isoforms in Chinese hamster AUXB1 cells limitations: Detection-limited result, not proof of universal impermeability. exposure: Compartment-specific FPGS induction and tracer chase [lawrence2014] Mammalian mitochondrial and cytosolic folylpolyglutamate synthetase maintain the subcellular compartmentalization of folates (2014). https://pubmed.ncbi.nlm.nih.gov/25164808/ DOI: 10.1074/jbc.m114.593244
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.