Mouse phosphatidylethanolamine N-methyltransferase / Pemt: molecular mechanisms & dependencies

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.

Human evidence only

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.

Recorded relationships

Where it participates (unsigned role)

Pemt deletion modestly reduced hepatic VLDL secretion in Ldlr-null mice.
Experimental mouse Pemt-null genotype → Mouse hepatic VLDL secretion source_derived_draftungraded
Experimental context and source evidence
evidence_span
{"source_cache": "artifacts/choline-research/19520976.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "57c952bdb4e387632c90b6dcc00ab5f0c600047b7e78bb179c08f6ccd62704d0", "start_char": 0, "end_char": 1537, "text_sha256": "57c952bdb4e387632c90b6dcc00ab5f0c600047b7e78bb179c08f6ccd62704d0"}
experimental_model
Pemt/Ldlr mouse knockout under a high-fat/high-cholesterol diet
exposure
Sixteen weeks of the specified diet; Pemt-null/Ldlr-null versus Pemt-intact/Ldlr-null
limitations
A lipid-export mechanism in a specific genetic model; lower plasma lipids do not establish healthier liver tissue or dietary benefit.
nutrient_topic
Choline research collection; topical membership is not evidence of a direct dietary effect. · Choline
organism
Mouse
plain_language
PC synthesis is connected to how the liver exports lipid.
primary_references
[choline-p19520976] Lack of phosphatidylethanolamine N-methyltransferase alters plasma VLDL phospholipids and attenuates atherosclerosis in mice. (2009). https://pubmed.ncbi.nlm.nih.gov/19520976/ DOI: 10.1161/atvbaha.109.188672
tissue_or_cell_type
Liver and circulating VLDL
Choline: metabolism, signaling and nutrient connections (2026-09-17) · lines 932–943
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Pemt/Ldlr mouse knockout under a high-fat/high-cholesterol diet · source_derived_draft · unverified_draft
### choline-pemt-vldl Pemt deletion modestly reduced hepatic VLDL secretion in Ldlr-null mice. Condition category: normal nutrient_topic: Choline research collection; topical membership is not evidence of a direct dietary effect. plain_language: PC synthesis is connected to how the liver exports lipid. organism: Mouse tissue_or_cell_type: Liver and circulating VLDL experimental_model: Pemt/Ldlr mouse knockout under a high-fat/high-cholesterol diet limitations: A lipid-export mechanism in a specific genetic model; lower plasma lipids do not establish healthier liver tissue or dietary benefit. exposure: Sixteen weeks of the specified diet; Pemt-null/Ldlr-null versus Pemt-intact/Ldlr-null evidence_span: {"source_cache": "artifacts/choline-research/19520976.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "57c952bdb4e387632c90b6dcc00ab5f0c600047b7e78bb179c08f6ccd62704d0", "start_char": 0, "end_char": 1537, "text_sha256": "57c952bdb4e387632c90b6dcc00ab5f0c600047b7e78bb179c08f6ccd62704d0"} [choline-p19520976] Lack of phosphatidylethanolamine N-methyltransferase alters plasma VLDL phospholipids and attenuates atherosclerosis in mice. (2009). https://pubmed.ncbi.nlm.nih.gov/19520976/ DOI: 10.1161/atvbaha.109.188672
Complete structured claim and evidence
Mtarc1 loss post-transcriptionally increased CEPT1 and PEMT, altering lipid-droplet phospholipids; knocking down these enzymes reversed protection.
Mouse mitochondrial amidoxime-reducing component 1 / Mtarc1 → Mouse choline/ethanolamine phosphotransferase 1 / Cept1 source_derived_draftungraded
Experimental context and source evidence
availability_state
machinery_impairment Imported condition classification; unverified.
evidence_span
{"source_cache": "artifacts/molybdenum-research/41641916.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "52b4d4d00867faaa1bb51ff6055f887a72c4c0d266bf7a1665b3780ce03aee64", "start_char": 0, "end_char": 1681, "text_sha256": "52b4d4d00867faaa1bb51ff6055f887a72c4c0d266bf7a1665b3780ce03aee64"}
experimental_model
Global/liver Mtarc1 knockout with Pnpla2, Lipa, Pemt and Cept1 interventions
exposure
Diet-induced liver disease with gene knockouts/knockdowns and multi-omics
limitations
Preclinical mechanism; no evidence that dietary molybdenum restriction selectively reproduces MTARC1 targeting.
nutrient_topic
Molybdenum research collection; topical membership is not evidence of a direct dietary effect. · Molybdenum
organism
Mus musculus; supporting cell studies
plain_language
Changing the droplet surface helped connect the enzyme loss to fat handling.
primary_references
[mo-p41641916] MTARC1 Inactivation Remodels Lipid Droplets to Protect Against Metabolic Fatty Liver Disease. (2026). https://pubmed.ncbi.nlm.nih.gov/41641916/ DOI: 10.1111/liv.70539
tissue_or_cell_type
Hepatic lipid droplets
trigger_kind
machinery_impairment Imported condition classification; unverified.
Molybdenum: cofactor assembly, sulfur metabolism and nutrient interactions (2026-09-17) · lines 1561–1572
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Global/liver Mtarc1 knockout with Pnpla2, Lipa, Pemt and Cept1 interventions · source_derived_draft · unverified_draft
### mo-marc-lipid-enzymes Mtarc1 loss post-transcriptionally increased CEPT1 and PEMT, altering lipid-droplet phospholipids; knocking down these enzymes reversed protection. Condition category: machinery_impairment nutrient_topic: Molybdenum research collection; topical membership is not evidence of a direct dietary effect. plain_language: Changing the droplet surface helped connect the enzyme loss to fat handling. organism: Mus musculus; supporting cell studies tissue_or_cell_type: Hepatic lipid droplets experimental_model: Global/liver Mtarc1 knockout with Pnpla2, Lipa, Pemt and Cept1 interventions limitations: Preclinical mechanism; no evidence that dietary molybdenum restriction selectively reproduces MTARC1 targeting. exposure: Diet-induced liver disease with gene knockouts/knockdowns and multi-omics evidence_span: {"source_cache": "artifacts/molybdenum-research/41641916.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "52b4d4d00867faaa1bb51ff6055f887a72c4c0d266bf7a1665b3780ce03aee64", "start_char": 0, "end_char": 1681, "text_sha256": "52b4d4d00867faaa1bb51ff6055f887a72c4c0d266bf7a1665b3780ce03aee64"} [mo-p41641916] MTARC1 Inactivation Remodels Lipid Droplets to Protect Against Metabolic Fatty Liver Disease. (2026). https://pubmed.ncbi.nlm.nih.gov/41641916/ DOI: 10.1111/liv.70539
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.

Mouse phosphatidylethanolamine N-methyltransferase / Pemt