Component
Rat phosphate-dependent glutaminase preparation, isoform unresolved
Rat phosphate-dependent glutaminase preparation, isoform unresolved. 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 it acts on
Purified phosphate-dependent glutaminase showed no theanine-degrading activity in the same study.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/theanine-research/12595072.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "8a9ae8e6ba86ea3e06440e972c30ca28685032dc3b9cd74c2d98311715c2435e", "start_char": 0, "end_char": 1324, "text_sha256": "8a9ae8e6ba86ea3e06440e972c30ca28685032dc3b9cd74c2d98311715c2435e"}
- experimental_model
- Renal enzyme purification and substrate-specificity assays
- exposure
- Theanine and glutamine substrates; phosphate-dependent versus independent preparations
- limitations
- Assay-defined enzyme identity is not assigned to human GLS or GLS2. Rat tissue distribution does not prove the human kidney is the exclusive metabolic site.
- nutrient_topic
- L-Theanine research collection; topical membership is not evidence of a direct dietary effect. · L-Theanine
- organism
- Wistar rat tissue and purified enzyme preparations
- plain_language
- Closely named enzyme activities were not interchangeable.
- primary_references
- [theanine-p12595072] Theanine, gamma-glutamylethylamide, is metabolized by renal phosphate-independent glutaminase. (2003). https://pubmed.ncbi.nlm.nih.gov/12595072/ DOI: 10.1016/s0304-4165(02)00504-4
- tissue_or_cell_type
- Kidney hydrolysis and gamma-glutamyl transfer
L-Theanine: metabolism, neural signaling, nutrient connections and human outcomes (2026-09-17) · lines 159–170
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Renal enzyme purification and substrate-specificity assays · source_derived_draft · unverified_draft
### theanine-renal-dependent-null Purified phosphate-dependent glutaminase showed no theanine-degrading activity in the same study. Condition category: normal nutrient_topic: L-Theanine research collection; topical membership is not evidence of a direct dietary effect. plain_language: Closely named enzyme activities were not interchangeable. organism: Wistar rat tissue and purified enzyme preparations tissue_or_cell_type: Kidney hydrolysis and gamma-glutamyl transfer experimental_model: Renal enzyme purification and substrate-specificity assays limitations: Assay-defined enzyme identity is not assigned to human GLS or GLS2. Rat tissue distribution does not prove the human kidney is the exclusive metabolic site. exposure: Theanine and glutamine substrates; phosphate-dependent versus independent preparations evidence_span: {"source_cache": "artifacts/theanine-research/12595072.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "8a9ae8e6ba86ea3e06440e972c30ca28685032dc3b9cd74c2d98311715c2435e", "start_char": 0, "end_char": 1324, "text_sha256": "8a9ae8e6ba86ea3e06440e972c30ca28685032dc3b9cd74c2d98311715c2435e"} [theanine-p12595072] Theanine, gamma-glutamylethylamide, is metabolized by renal phosphate-independent glutaminase. (2003). https://pubmed.ncbi.nlm.nih.gov/12595072/ DOI: 10.1016/s0304-4165(02)00504-4
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.