Component
Retinoic-acid-responsive transcription
Retinoic-acid-responsive transcription; model-specific measured outcome rather than a universal clinical endpoint.
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.
What acts on it
RXRA enhanced RAR-mediated transcription at RA concentrations insufficient to substantially activate RXRA itself.
Experimental context and source evidence
- evidence_locator
- Abstract
- experimental_model
- Receptor interaction, DNA binding and transfection experiments.
- exposure
- Receptor cotransfection and RA
- limitations
- Reporter-system dependence; no nutrient dose response.
- nutrient_topic
- Vitamin A research collection; topical membership is not evidence of a direct dietary effect. · Vitamin A
- organism
- Engineered cellular receptor system
- plain_language
- RXRA can assist RAR signaling without equivalent activation of both partners.
- primary_references
- [va-zhang-1992] Retinoid X receptor is an auxiliary protein for thyroid hormone and retinoic acid receptors (1992). https://pubmed.ncbi.nlm.nih.gov/1310350/ DOI: 10.1038/355441a0
- tissue_or_cell_type
- Transfection reporters
Vitamin A: forms, mechanisms, deficiency and excess (2026-09-17) · lines 1123–1134
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Receptor interaction, DNA binding and transfection experiments. · source_derived_draft · unverified_draft
### va-sig-rxra-rar-transactivation RXRA enhanced RAR-mediated transcription at RA concentrations insufficient to substantially activate RXRA itself. Condition category: normal nutrient_topic: Vitamin A research collection; topical membership is not evidence of a direct dietary effect. plain_language: RXRA can assist RAR signaling without equivalent activation of both partners. organism: Engineered cellular receptor system tissue_or_cell_type: Transfection reporters experimental_model: Receptor interaction, DNA binding and transfection experiments. limitations: Reporter-system dependence; no nutrient dose response. evidence_locator: Abstract exposure: Receptor cotransfection and RA [va-zhang-1992] Retinoid X receptor is an auxiliary protein for thyroid hormone and retinoic acid receptors (1992). https://pubmed.ncbi.nlm.nih.gov/1310350/ DOI: 10.1038/355441a0
Complete structured claim and evidenceSMRT associated with retinoid receptors and mediated transcriptional silencing in engineered assays.
Experimental context and source evidence
- evidence_locator
- Abstract
- experimental_model
- Biochemical interactions and engineered cellular transcription reporters.
- exposure
- Unliganded receptor and SMRT
- limitations
- Not a claim that all unliganded RAR targets are repressed.
- nutrient_topic
- Vitamin A research collection; topical membership is not evidence of a direct dietary effect. · Vitamin A
- organism
- Biochemical and cellular reporter systems
- plain_language
- Corepressor proteins help keep selected receptor-controlled genes quiet.
- primary_references
- [va-chen-1995] A transcriptional co-repressor that interacts with nuclear hormone receptors (1995). https://pubmed.ncbi.nlm.nih.gov/7566127/ DOI: 10.1038/377454a0
- tissue_or_cell_type
- Receptor complexes
Vitamin A: forms, mechanisms, deficiency and excess (2026-09-17) · lines 1136–1147
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Biochemical interactions and engineered cellular transcription reporters. · source_derived_draft · unverified_draft
### va-sig-smrt-repression SMRT associated with retinoid receptors and mediated transcriptional silencing in engineered assays. Condition category: normal nutrient_topic: Vitamin A research collection; topical membership is not evidence of a direct dietary effect. plain_language: Corepressor proteins help keep selected receptor-controlled genes quiet. organism: Biochemical and cellular reporter systems tissue_or_cell_type: Receptor complexes experimental_model: Biochemical interactions and engineered cellular transcription reporters. limitations: Not a claim that all unliganded RAR targets are repressed. evidence_locator: Abstract exposure: Unliganded receptor and SMRT [va-chen-1995] A transcriptional co-repressor that interacts with nuclear hormone receptors (1995). https://pubmed.ncbi.nlm.nih.gov/7566127/ DOI: 10.1038/377454a0
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.