Cited by 1,483Cellular transport and secretionNeuroscience and Neuropharmacology ResearchCalcium signaling and nucleotide metabolism

Synaptotagmin I: A major Ca2+ sensor for transmitter release at a central synapse

Open access
Geppert, Martin, Goda, Yukiko, Hammer, Robert E., Li, Cai, Rosahl, Thomas W., Stevens, Charles F., Südhof, Thomas C.·1994·Cell

Abstract

Mice carrying a mutation in the synaptotagmin I gene were generated by homologous recombination. Mutant mice are phenotypically normal as heterozygotes, but die within 48 hr after birth as homozygotes. Studies of hippocampal neurons cultured from homozygous mutant mice reveal that synaptic transmission is severely impaired. The synchronous, fast component of Ca(2+)-dependent neurotransmitter release is decreased, whereas asynchronous release processes, including spontaneous synaptic activity (miniature excitatory postsynaptic current frequency) and release triggered by hypertonic solution or alpha-latrotoxin, are unaffected. Our findings demonstrate that synaptotagmin I function is required for Ca2+ triggering of synchronous neurotransmitter release, but is not essential for asynchronous or Ca(2+)-independent release. We propose that synaptotagmin I is the major low affinity Ca2+ sensor mediating Ca2+ regulation of synchronous neurotransmitter release in hippocampal neurons.

Integrity signals

Registry

Crossref · 10.1016/0092-8674(94)90556-8

Cites

43 of 43 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Synaptotagmin-1 (Syt1) is a Ca2+ sensor for evoked synchronous neurotransmitter release.

    “Among these isoforms, synaptotagmin-1 (Syt1) is a Ca2+ sensor for evoked synchronous neurotransmitter release7.”
  • Removal of Syt1 abolished synchronous release monitored by eIPSCs, a phenotype rescued by re-introduction of WT but not mutant Syt1 cDNA.

    “As expected7, removal of Syt1 abolished synchronous release monitored by recording evoked inhibitory postsynaptic currents (eIPSCs), a phenotype that can be rescued by re-introduction of WT but not mutant Syt1 cDNA (Figs. 4a, b).”

Cites

Flagged first, then by citations

2 of the 45 references couldn’t be matched to a known paper.

Cited by

Sorted by citations

Authors
Geppert, M., Goda, Y., Hammer, R. E., Li, C., Rosahl, T. W., Stevens, C. F., & Südhof, T. C.
Affiliations
  • The University of Texas Southwestern Medical Center (US)
  • Salk Institute for Biological Studies (US)
  • Howard Hughes Medical Institute (US)
Venue
Cell
Publisher
Elsevier BV
Published
1994-11
Volume
79
Issue
4
Pages
717-727
ISSN
0092-8674 (ISSN-L)
OpenAlex
W2165302477
Cited by
1,483
References
45
Citations by year
2026: 17 · 2025: 24 · 2024: 34 · 2023: 36 · 2022: 41 · 2021: 42 · 2020: 47 · 2019: 49 · 2018: 43 · 2017: 41 · 2016: 31 · 2015: 41 · 2014: 51 · 2013: 33 · 2012: 59
FWCI
20.67
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • UCL Discovery (University College London) (submittedVersion)
Funders
  • Deutsche Forschungsgemeinschaft
  • National Institutes of Health (5r01ns012961-22)
  • National Institute of Neurological Disorders and Stroke (R0 NS 12961-17)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Calcium signaling and nucleotide metabolism
Keywords
synaptotagmin-1, calcium sensor, asynchronous release, calcium-independent release, hippocampal neurons, synaptic transmission, mouse mutants, alpha-latrotoxin, spontaneous synaptic activity
MeSH terms
Animals, Animals, Newborn, Base Sequence, Brain, Calcium, Calcium-Binding Proteins, Exons, Hippocampus, Homozygote, Hypertonic Solutions, Membrane Glycoproteins, Mice, Neurologic Mutants, Molecular Sequence Data, Mutation, Nerve Tissue Proteins, Synaptic Transmission, Neurons, Reference Values, Spider Venoms, Synapses, Restriction Mapping, Polymerase Chain Reaction, Mutagenesis, DNA Primers, Neurotransmitter Agents, Synaptotagmins, Synaptotagmin I, Mice

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review