Evidence map›Paper›PMID 30510181›Full record

ArticleNature communications2018

Exocyst dynamics during vesicle tethering and fusion.

Syed Mukhtar Ahmed, Hisayo Nishida-Fukuda, Yuchong Li, W Hayes McDonald, Claudiu C Gradinaru, Ian G Macara

Erratum issuedOpen access · goldAbstract read
In one paragraph

Article in Nature communications, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 81 papers.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed
6.2field-weighted citation impact, top 3% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

81 citing papers in PubMed, 145 citations in OpenAlex.

  1. Review
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  6. Review
  7. Preassembly and independent trafficking of the exocyst complex inProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  8. Article
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  12. Intracellular and Extracellular Vesicle miRNA Signatures in Human iPSC-Derived Neural Stem Cells and Floor Plate Progenitors.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2025
    Article
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  17. Roles for the canonical polarity machinery in thebioRxiv : the preprint server for biology · 2025
    Article
  18. Article
  19. Review
  20. Article

21 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 3 institutions in 3 countries.

Syed Mukhtar AhmedDepartment of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN, 37240, USA. syed.m.ahmed@vanderbilt.edu.ORCID http://orcid.org/0000-0002-9183-9957
Hisayo Nishida-FukudaDepartment of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN, 37240, USA.
Yuchong LiDepartment of Physics, University of Toronto, Toronto, ON, M5S 1A7, Canada.
W Hayes McDonaldDepartment of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN, 37240, USA.
Claudiu C GradinaruDepartment of Physics, University of Toronto, Toronto, ON, M5S 1A7, Canada.
Ian G MacaraDepartment of Cell and Developmental Biology, Vanderbilt University School of Medicine, Nashville, TN, 37240, USA. ian.g.macara@vanderbilt.edu.
Vanderbilt University · USUniversity of Toronto · CAKansai Medical University · JP

Funding

Translational Analysis CoreP30DK058404 · NIDDK · VANDERBILT UNIVERSITY MEDICAL CENTER · PI RICHARD M. PEEK · 2002 to 2026
$29.9M
MECHANISMS OF CELL POLARITY ESTABLISHMENTR01GM070902 · NIGMS · VANDERBILT UNIVERSITY · PI MACARA, IAN G · 2004 to 2022
$5.4M
NIDDK NIH HHS P30 DK058404NIGMS NIH HHS R01 GM070902
6 · The paper itself

Abstract

The exocyst is a conserved octameric complex that tethers exocytic vesicles to the plasma membrane prior to fusion. Exocyst assembly and delivery mechanisms remain unclear, especially in mammalian cells. Here we tagged multiple endogenous exocyst subunits with sfGFP or Halo using Cas9 gene-editing, to create single and double knock-in lines of mammary epithelial cells, and interrogated exocyst dynamics by high-speed imaging and correlation spectroscopy. We discovered that mammalian exocyst is comprised of tetrameric subcomplexes that can associate independently with vesicles and plasma membrane and are in dynamic equilibrium with octamer and monomers. Membrane arrival times are similar for subunits and vesicles, but with a small delay (~80msec) between subcomplexes. Departure of SEC3 occurs prior to fusion, whereas other subunits depart just after fusion. About 9 exocyst complexes are associated per vesicle. These data reveal the mammalian exocyst as a remarkably dynamic two-part complex and provide important insights into assembly/disassembly mechanisms.

Indexed as

ExocytosisAlgorithmsAnimalsCell LineEpithelial CellsFemaleGreen Fluorescent ProteinsHEK293 CellsHumansMammary Glands, AnimalMembrane FusionMiceMicroscopy, ConfocalModels, BiologicalMultiprotein ComplexesProtein TransportGreen Fluorescent ProteinsMultiprotein ComplexesVesicular Transport Proteins

Identifiers

PMID30510181
PMCPMC6277416
OpenAlexW2953178252

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.