Component
Presynaptic terminal
Biological or experimental compartment identified in the linked study.
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.
Where it participates (unsigned role)
A synaptotagmin-1 knock-in mutation reducing calcium affinity also reduces the calcium sensitivity of evoked neurotransmitter release.
Experimental context and source evidence
- availability_state
- machinery_impairment Imported condition classification; unverified.
- compartment_description
- Presynaptic terminal
- experimental_model
- Mouse synaptotagmin-1 knock-in and cultured neuronal release measurements
- limitations
- Readily releasable pool size and spontaneous release were unchanged; this is a sensor mutation, not calcium deprivation.
- nutrient_topic
- Calcium research collection; topical membership is not evidence of a direct dietary effect. · Calcium
- organism
- Mus musculus
- plain_language
- Changing the calcium sensor changes the calcium needed to trigger release.
- primary_references
- [ca-fernandezchacon2001] Synaptotagmin I functions as a calcium regulator of release probability (2001). https://pubmed.ncbi.nlm.nih.gov/11242035/ DOI: 10.1038/35065004
- research_relationship_category
- loss_of_function
- tissue_or_cell_type
- Cultured neurons
- trigger_kind
- machinery_impairment Imported condition classification; unverified.
Calcium: mechanism-first literature curation (2026-09-17) · lines 796–807
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Mouse synaptotagmin-1 knock-in and cultured neuronal release measurements · source_derived_draft · unverified_draft
### ca-synaptotagmin-mutant-sensitivity A synaptotagmin-1 knock-in mutation reducing calcium affinity also reduces the calcium sensitivity of evoked neurotransmitter release. Condition category: machinery_impairment nutrient_topic: Calcium research collection; topical membership is not evidence of a direct dietary effect. plain_language: Changing the calcium sensor changes the calcium needed to trigger release. organism: Mus musculus tissue_or_cell_type: Cultured neurons experimental_model: Mouse synaptotagmin-1 knock-in and cultured neuronal release measurements limitations: Readily releasable pool size and spontaneous release were unchanged; this is a sensor mutation, not calcium deprivation. research_relationship_category: loss_of_function compartment_description: Presynaptic terminal [ca-fernandezchacon2001] Synaptotagmin I functions as a calcium regulator of release probability (2001). https://pubmed.ncbi.nlm.nih.gov/11242035/ DOI: 10.1038/35065004
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.