Mouse Kcnj2 (Kir2.1): 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

What acts on it

PIP2 depletion in the studied mouse small-vessel disease model impaired endothelial Kir2.1 activity.
Phosphatidylinositol 4,5-bisphosphate → Mouse Kcnj2 (Kir2.1) source_derived_draftungraded
Experimental context and source evidence
availability_state
machinery_impairment Imported condition classification; unverified.
evidence_span
{"source_cache": "artifacts/inositol-research/33875602.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "139eeba386e63329898f8e36ebe93ad741eed904819bbebe7fc2b1808130a19d", "start_char": 0, "end_char": 1108, "text_sha256": "139eeba386e63329898f8e36ebe93ad741eed904819bbebe7fc2b1808130a19d"}
experimental_model
Genetic small-vessel disease mouse model and lipid rescue
exposure
PIP2 depletion and soluble PIP2 administration
limitations
Mouse disease model; not evidence that oral inositol treats human cerebrovascular disease.
nutrient_topic
Inositol research collection; topical membership is not evidence of a direct dietary effect. · Inositol (stereoisomer family)
organism
Mus musculus
plain_language
The potassium channel can fail because its supporting lipid is missing, even though the channel protein remains.
primary_references
[ino-p33875602] PIP2 corrects cerebral blood flow deficits in small vessel disease by rescuing capillary Kir2.1 activity. (2021). https://pubmed.ncbi.nlm.nih.gov/33875602/ DOI: 10.1073/pnas.2025998118
tissue_or_cell_type
Brain capillary endothelium and cerebral circulation
trigger_kind
machinery_impairment Imported condition classification; unverified.
Inositol: synthesis, signaling, mineral interactions and conditional deficiency (2026-09-17) · lines 1016–1027
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Genetic small-vessel disease mouse model and lipid rescue · source_derived_draft · unverified_draft
### ino-kir-pip2 PIP2 depletion in the studied mouse small-vessel disease model impaired endothelial Kir2.1 activity. Condition category: machinery_impairment nutrient_topic: Inositol research collection; topical membership is not evidence of a direct dietary effect. plain_language: The potassium channel can fail because its supporting lipid is missing, even though the channel protein remains. organism: Mus musculus tissue_or_cell_type: Brain capillary endothelium and cerebral circulation experimental_model: Genetic small-vessel disease mouse model and lipid rescue limitations: Mouse disease model; not evidence that oral inositol treats human cerebrovascular disease. exposure: PIP2 depletion and soluble PIP2 administration evidence_span: {"source_cache": "artifacts/inositol-research/33875602.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "139eeba386e63329898f8e36ebe93ad741eed904819bbebe7fc2b1808130a19d", "start_char": 0, "end_char": 1108, "text_sha256": "139eeba386e63329898f8e36ebe93ad741eed904819bbebe7fc2b1808130a19d"} [ino-p33875602] PIP2 corrects cerebral blood flow deficits in small vessel disease by rescuing capillary Kir2.1 activity. (2021). https://pubmed.ncbi.nlm.nih.gov/33875602/ DOI: 10.1073/pnas.2025998118
Complete structured claim and evidence

Where it participates (unsigned role)

Soluble PIP2 administration restored Kir2.1-dependent neurovascular responses in the studied mouse model.
Phosphatidylinositol 4,5-bisphosphate → Neural-activity-evoked cerebral blood flow source_derived_draftungraded
Experimental context and source evidence
availability_state
machinery_impairment Imported condition classification; unverified.
evidence_span
{"source_cache": "artifacts/inositol-research/33875602.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "139eeba386e63329898f8e36ebe93ad741eed904819bbebe7fc2b1808130a19d", "start_char": 0, "end_char": 1108, "text_sha256": "139eeba386e63329898f8e36ebe93ad741eed904819bbebe7fc2b1808130a19d"}
experimental_model
Genetic small-vessel disease mouse model and lipid rescue
exposure
PIP2 depletion and soluble PIP2 administration
limitations
Mouse disease model; not evidence that oral inositol treats human cerebrovascular disease.
nutrient_topic
Inositol research collection; topical membership is not evidence of a direct dietary effect. · Inositol (stereoisomer family)
organism
Mus musculus
plain_language
Replacing the deficient lipid signal restored a blood-flow response in these mice.
primary_references
[ino-p33875602] PIP2 corrects cerebral blood flow deficits in small vessel disease by rescuing capillary Kir2.1 activity. (2021). https://pubmed.ncbi.nlm.nih.gov/33875602/ DOI: 10.1073/pnas.2025998118
tissue_or_cell_type
Brain capillary endothelium and cerebral circulation
trigger_kind
machinery_impairment Imported condition classification; unverified.
Inositol: synthesis, signaling, mineral interactions and conditional deficiency (2026-09-17) · lines 1029–1040
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Genetic small-vessel disease mouse model and lipid rescue · source_derived_draft · unverified_draft
### ino-kir-flow-rescue Soluble PIP2 administration restored Kir2.1-dependent neurovascular responses in the studied mouse model. Condition category: machinery_impairment nutrient_topic: Inositol research collection; topical membership is not evidence of a direct dietary effect. plain_language: Replacing the deficient lipid signal restored a blood-flow response in these mice. organism: Mus musculus tissue_or_cell_type: Brain capillary endothelium and cerebral circulation experimental_model: Genetic small-vessel disease mouse model and lipid rescue limitations: Mouse disease model; not evidence that oral inositol treats human cerebrovascular disease. exposure: PIP2 depletion and soluble PIP2 administration evidence_span: {"source_cache": "artifacts/inositol-research/33875602.abstract.txt", "locator": "Exact primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "139eeba386e63329898f8e36ebe93ad741eed904819bbebe7fc2b1808130a19d", "start_char": 0, "end_char": 1108, "text_sha256": "139eeba386e63329898f8e36ebe93ad741eed904819bbebe7fc2b1808130a19d"} [ino-p33875602] PIP2 corrects cerebral blood flow deficits in small vessel disease by rescuing capillary Kir2.1 activity. (2021). https://pubmed.ncbi.nlm.nih.gov/33875602/ DOI: 10.1073/pnas.2025998118
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 Kcnj2 (Kir2.1)