Evidence map›Paper›PMID 21964439›Full record

ArticleNature cell biology2011

Phosphatidylserine is polarized and required for proper Cdc42 localization and for development of cell polarity.

Gregory D Fairn, Martin Hermansson, Pentti Somerharju, Sergio Grinstein

Abstract read
PubMed Publisher
In one paragraph

Article in Nature cell biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 100 papers.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed
6.4field-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

100 citing papers in PubMed, 206 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Targeting the cell membrane in established and emerging model organisms.bioRxiv : the preprint server for biology · 2025
    Article
  5. Article
  6. Article
  7. An origin for a eukaryotic lipid transfer protein fold in Asgard archaea.bioRxiv : the preprint server for biology · 2025
    Article
  8. Article
  9. Roles for the canonical polarity machinery in thebioRxiv : the preprint server for biology · 2025
    Article
  10. Mechanisms of growth-dependent regulation of the Gin4 kinase.bioRxiv : the preprint server for biology · 2024
    Article
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. Article

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

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

4 authors at 2 institutions in 2 countries.

Gregory D FairnProgram in Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 1X8, Canada.
Martin Hermansson
Pentti Somerharju
Sergio Grinstein
Hospital for Sick Children · CAUniversity of Helsinki · FI

Funding

Canadian Institutes of Health Research 7075Canadian Institutes of Health Research MOP4665
6 · The paper itself

Abstract

Polarity is key to the function of eukaryotic cells. On the establishment of a polarity axis, cells can vectorially target secretion, generating an asymmetric distribution of plasma membrane proteins. From Saccharomyces cerevisiae to mammals, the small GTPase Cdc42 is a pivotal regulator of polarity. We used a fluorescent probe to visualize the distribution of phosphatidylserine in live S. cerevisiae. Remarkably, phosphatidylserine was polarized in the plasma membrane, accumulating in bud necks, the bud cortex and the tips of mating projections. Polarization required vectorial delivery of phosphatidylserine-containing secretory vesicles, and phosphatidylserine was largely excluded from endocytic vesicles, contributing to its polarized retention. Mutants lacking phosphatidylserine synthase had impaired polarization of the Cdc42 complex, leading to a delay in bud emergence, and defective mating. The addition of lysophosphatidylserine resulted in resynthesis and polarization of phosphatidylserine, as well as repolarization of Cdc42. The results indicate that phosphatidylserine--and presumably its polarization--are required for optimal Cdc42 targeting and activation during cell division and mating.

Indexed as

cdc42 GTP-Binding Protein, Saccharomyces cerevisiaeCDPdiacylglycerol-Serine O-PhosphatidyltransferaseCell DivisionCell PolarityMutagenesisPhosphatidylserinesSaccharomyces cerevisiaecdc42 GTP-Binding Protein, Saccharomyces cerevisiaeCDPdiacylglycerol-Serine O-PhosphatidyltransferasePhosphatidylserines

Identifiers

PMID21964439
OpenAlexW2012810176

What OpenQuestion holds

Textmetadata
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.