Component
Human SLC1A1 R445W and I395del variants
Context-specific entity; species, compartment and exposure are stated on each claim.
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 it acts on
Human recessive SLC1A1 R445W and I395del variants were identified in dicarboxylic aminoaciduria with urinary glutamate and aspartate loss.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- evidence_access
- Primary abstract
- experimental_model
- Human families and functional characterization of disease-associated human transporter variants.
- limitations
- Gene-related renal handling is not evidence of an ordinary dietary deficiency; neurological associations do not establish one mechanism.
- nutrient_topic
- L-Aspartate collection; species, compartment, exposure, co-substrates and manipulation remain explicit. · L-Aspartate
- plain_language
- A transporter defect can cause nutrient loss even when intake is adequate.
- primary_references
- Loss-of-function mutations in the glutamate transporter SLC1A1 cause human dicarboxylic aminoaciduria. · 2011 · https://pubmed.ncbi.nlm.nih.gov/21123949/ · DOI 10.1172/JCI44474
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
L-Aspartate: redox transfer, nitrogen partitioning and cross-nutrient mechanisms (2026-09-19) · lines 34–40
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Human families and functional characterization of disease-associated human transporter variants. · source_derived_draft · unverified_draft
## l-aspartate-renal-gene-loss A transporter defect can cause nutrient loss even when intake is adequate. Human recessive SLC1A1 R445W and I395del variants were identified in dicarboxylic aminoaciduria with urinary glutamate and aspartate loss. Model: Human families and functional characterization of disease-associated human transporter variants. Limitations: Gene-related renal handling is not evidence of an ordinary dietary deficiency; neurological associations do not establish one mechanism. Evidence access: Primary abstract Loss-of-function mutations in the glutamate transporter SLC1A1 cause human dicarboxylic aminoaciduria. · 2011 · https://pubmed.ncbi.nlm.nih.gov/21123949/ · DOI 10.1172/JCI44474
Complete structured claim and evidenceThe disease-associated human SLC1A1 variants showed near-absent cell-surface expression in a canine kidney cell model, with impaired glutamate and cysteine transport in functional assays.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- evidence_access
- Primary abstract
- experimental_model
- Human constructs in heterologous functional assays and canine MDCK cells.
- limitations
- The accessed abstract reports glutamate/cysteine assays; do not mislabel them as direct aspartate uptake measurements.
- nutrient_topic
- L-Aspartate collection; species, compartment, exposure, co-substrates and manipulation remain explicit. · L-Aspartate
- plain_language
- Having a transporter gene is insufficient if the protein fails to reach the membrane.
- primary_references
- Loss-of-function mutations in the glutamate transporter SLC1A1 cause human dicarboxylic aminoaciduria. · 2011 · https://pubmed.ncbi.nlm.nih.gov/21123949/ · DOI 10.1172/JCI44474
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
L-Aspartate: redox transfer, nitrogen partitioning and cross-nutrient mechanisms (2026-09-19) · lines 42–48
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Human constructs in heterologous functional assays and canine MDCK cells. · source_derived_draft · unverified_draft
## l-aspartate-renal-trafficking Having a transporter gene is insufficient if the protein fails to reach the membrane. The disease-associated human SLC1A1 variants showed near-absent cell-surface expression in a canine kidney cell model, with impaired glutamate and cysteine transport in functional assays. Model: Human constructs in heterologous functional assays and canine MDCK cells. Limitations: The accessed abstract reports glutamate/cysteine assays; do not mislabel them as direct aspartate uptake measurements. Evidence access: Primary abstract Loss-of-function mutations in the glutamate transporter SLC1A1 cause human dicarboxylic aminoaciduria. · 2011 · https://pubmed.ncbi.nlm.nih.gov/21123949/ · DOI 10.1172/JCI44474
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.