Cited by 185Cellular transport and secretionNeuroscience and Neuropharmacology ResearchExtracellular vesicles in disease

Protein Quantification at the Single Vesicle Level Reveals That a Subset of Synaptic Vesicle Proteins Are Trafficked with High Precision

Open access
Mutch, Sarah A., Kensel-Hammes, Patricia, Gadd, Jennifer C., Fujimoto, Bryant S., Allen, Richard W., Schiro, Perry G., Lorenz, Robert M., Kuyper, Christopher L. +3 more·2011·The Journal of Neuroscience

Abstract

Protein sorting represents a potential point of regulation in neurotransmission because it dictates the protein composition of synaptic vesicles, the organelle that mediates transmitter release. Although the average number of most vesicle proteins has been estimated using bulk biochemical approaches (Takamori et al., 2006), no information exists on the intervesicle variability of protein number, and thus on the precision with which proteins are sorted to vesicles. To address this, we adapted a single molecule quantification approach (Mutch et al., 2007) and used it to quantify both the average number and variance of seven integral membrane proteins in brain synaptic vesicles. We report that four vesicle proteins, SV2, the proton ATPase, Vglut1, and synaptotagmin 1, showed little intervesicle variation in number, indicating they are sorted to vesicles with high precision. In contrast, the apparent number of VAMP2/synaptobrevin 2, synaptophysin, and synaptogyrin demonstrated significant intervesicle variability. These findings place constraints on models of protein function at the synapse and raise the possibility that changes in vesicle protein expression affect vesicle composition and functioning.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1523/jneurosci.3805-10.2011

Cites

39 of 39 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

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?

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Research works printed but not linked: 1

  1. Press WH 2001 Numerical recipes in Fortran 77: the art of scientific computing, 2nd with corrections Cambridge [England] New York Cambridge University Press

Cited by

Sorted by citations

Authors
Mutch, S. A., Kensel-Hammes, P., Gadd, J. C., Fujimoto, B. S., Allen, R. W., Schiro, P. G., Lorenz, R. M., Kuyper, C. L., Kuo, J. S., Bajjalieh, S. M., & Chiu, D. T.
Affiliations
University of Washington (US)
Venue
The Journal of Neuroscience
Published
2011-01-26
Volume
31
Issue
4
Pages
1461-1470
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2069765655
Cited by
185
References
39
Citations by year
2026: 5 · 2025: 11 · 2024: 16 · 2023: 12 · 2022: 17 · 2021: 16 · 2020: 16 · 2019: 8 · 2018: 7 · 2017: 10 · 2016: 11 · 2015: 5 · 2014: 10 · 2013: 12 · 2012: 16
FWCI
7.67
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • Directorate for Biological Sciences
  • University of California, Davis
  • National Institute of Neurological Disorders and Stroke (U24NS050606, R01NS052637, NS052637)
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 › Molecular Biology › Extracellular vesicles in disease
Keywords
synaptic vesicle proteins, protein sorting, vesicle composition, SV2, VGLUT1, synaptotagmin-1, synaptophysin, H+-ATPase, neurotransmitter release, synaptic transmission
MeSH terms
Animals, Brain, Membrane Proteins, Synaptic Vesicles, Rats, Sprague-Dawley, Protein Transport, Rats, In Vitro Techniques

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