Component
Human phosphatidylcholine synthesis
Human phosphatidylcholine synthesis. 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 acts on it
The PCYT1A defects markedly reduced phosphatidylcholine synthesis.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- evidence_span
- {"source_cache": "artifacts/choline-research/24889630.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "2a370c0cdea7e750360683ff2fe878373965dc5f385e243fe6b0fce1a332ee99", "start_char": 0, "end_char": 1005, "text_sha256": "2a370c0cdea7e750360683ff2fe878373965dc5f385e243fe6b0fce1a332ee99"}
- experimental_model
- Two unrelated patients; PCYT1A expression and PC-synthesis experiments
- exposure
- Biallelic PCYT1A loss-of-function variants
- limitations
- Rare genetic disease does not establish choline intake as the cause of common fatty liver or diabetes.
- nutrient_topic
- Choline research collection; topical membership is not evidence of a direct dietary effect. · Choline
- organism
- Human
- plain_language
- Choline supply alone did not describe the impaired synthetic machinery.
- primary_references
- [choline-p24889630] Mutations disrupting the Kennedy phosphatidylcholine pathway in humans with congenital lipodystrophy and fatty liver disease. (2014). https://pubmed.ncbi.nlm.nih.gov/24889630/ DOI: 10.1073/pnas.1408523111
- tissue_or_cell_type
- Patient-derived material; liver/adipose phenotype
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Choline: metabolism, signaling and nutrient connections (2026-09-17) · lines 750–761
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Two unrelated patients; PCYT1A expression and PC-synthesis experiments · source_derived_draft · unverified_draft
### choline-pcyt1a-pc The PCYT1A defects markedly reduced phosphatidylcholine synthesis. Condition category: machinery_impairment nutrient_topic: Choline research collection; topical membership is not evidence of a direct dietary effect. plain_language: Choline supply alone did not describe the impaired synthetic machinery. organism: Human tissue_or_cell_type: Patient-derived material; liver/adipose phenotype experimental_model: Two unrelated patients; PCYT1A expression and PC-synthesis experiments limitations: Rare genetic disease does not establish choline intake as the cause of common fatty liver or diabetes. exposure: Biallelic PCYT1A loss-of-function variants evidence_span: {"source_cache": "artifacts/choline-research/24889630.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "2a370c0cdea7e750360683ff2fe878373965dc5f385e243fe6b0fce1a332ee99", "start_char": 0, "end_char": 1005, "text_sha256": "2a370c0cdea7e750360683ff2fe878373965dc5f385e243fe6b0fce1a332ee99"} [choline-p24889630] Mutations disrupting the Kennedy phosphatidylcholine pathway in humans with congenital lipodystrophy and fatty liver disease. (2014). https://pubmed.ncbi.nlm.nih.gov/24889630/ DOI: 10.1073/pnas.1408523111
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.