Cited by 122Microtubule and mitosis dynamicsCellular transport and secretionCellular Mechanics and Interactions

Septin filaments exhibit a dynamic, paired organization that is conserved from yeast to mammals

Open access
DeMay, Bradley S., Bai, Xiaobo, Howard, Louisa, Occhipinti, Patricia, Meseroll, Rebecca A., Spiliotis, Elias T., Oldenbourg, Rudolf, Gladfelter, Amy S.·2011·Journal of Cell Biology

Abstract

The septins are conserved, GTP-binding proteins important for cytokinesis, membrane compartmentalization, and exocytosis. However, it is unknown how septins are arranged within higher-order structures in cells. To determine the organization of septins in live cells, we developed a polarized fluorescence microscopy system to monitor the orientation of GFP dipole moments with high spatial and temporal resolution. When GFP was fused to septins, the arrangement of GFP dipoles reflected the underlying septin organization. We demonstrated in a filamentous fungus, a budding yeast, and a mammalian epithelial cell line that septin proteins were organized in an identical highly ordered fashion. Fluorescence anisotropy measurements indicated that septin filaments organized into pairs within live cells, just as has been observed in vitro. Additional support for the formation of pairs came from the observation of paired filaments at the cortex of cells using electron microscopy. Furthermore, we found that highly ordered septin structures exchanged subunits and rapidly rearranged. We conclude that septins assemble into dynamic, paired filaments in vivo and that this organization is conserved from yeast to mammals.

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 · 10.1083/jcb.201012143

Cites

43 of 43 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

Cited by

Sorted by citations

Authors
DeMay, B. S., Bai, X., Howard, L., Occhipinti, P., Meseroll, R. A., Spiliotis, E. T., Oldenbourg, R., & Gladfelter, A. S.
Affiliations
  • Dartmouth College (US)
  • Drexel University (US)
  • Marine Biological Laboratory (US)
Corresponding author
Gladfelter, Amy S.
Venue
Journal of Cell Biology
Published
2011-06-13
Volume
193
Issue
6
Pages
1065-1081
ISSN
  • 0021-9525 (ISSN-L)
  • 1540-8140
OpenAlex
W2136627895
Cited by
122
References
43
Citations by year
2026: 2 · 2025: 4 · 2024: 10 · 2023: 4 · 2022: 10 · 2021: 9 · 2020: 13 · 2019: 9 · 2018: 3 · 2017: 7 · 2016: 14 · 2015: 7 · 2014: 6 · 2013: 9 · 2012: 6
FWCI
4.60
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Cell Biology (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
  • Open Access Server of the Woods Hole Scientific Community (Woods Hole Scientific Community) (submittedVersion, cc-by-nc-sa)
Funders
  • National Institute of Neurological Disorders and Stroke (R56NS048090, NS48090-06A, R01NS048090)
  • National Institute of Biomedical Imaging and Bioengineering (R01EB002583, EB002583)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Microtubule and mitosis dynamics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular Mechanics and Interactions
Keywords
septins, septin filaments, G proteins, fluorescence anisotropy, cytokinesis, membrane compartmentalization, exocytosis, cell cortex, yeast, evolutionary conservation
MeSH terms
Animals, Cell Line, Cytoskeleton, Humans, Microscopy, Fluorescence, Microscopy, Polarization, Recombinant Fusion Proteins, Yeasts, Green Fluorescent Proteins, Protein Multimerization, Septins

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