Evidence map›Paper›PMID 18572937›Full record

ArticleJournal of the American Chemical Society2008

Combined electrostatics and hydrogen bonding determine intermolecular interactions between polyphosphoinositides.

Ilya Levental, Andrejs Cebers, Paul A Janmey

Open access · greenAbstract read
In one paragraph

Article in Journal of the American Chemical Society, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
1.5field-weighted citation impact, top 18% 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

26 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Characterization of Specific Ion Effects on PI(4,5)PThe journal of physical chemistry. B · 2020
    Article
  6. GαBiochemistry · 2019
    Article
  7. Structural mechanism for Bruton's tyrosine kinase activation at the cell membrane.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  8. Review
  9. Article
  10. Multivalent Cation-Bridged PI(4,5)PBiophysical journal · 2018
    Article
  11. Article
  12. Article
  13. The Ebola virus protein VP40 hexamer enhances the clustering of PI(4,5)PPhysical chemistry chemical physics : PCCP · 2016
    Article
  14. Review
  15. Review
  16. Review
  17. Article
  18. Article
  19. Article
  20. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 2 countries.

Ilya LeventalInstitute for Medicine and Engineering, Department of Bioengineering, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.
Andrejs Cebers
Paul A Janmey
University of Latvia · LVUniversity of Pennsylvania · US

Funding

Novel antibacterial agents resistant to inactivation by polyelectrolytesR01HL067286 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI JANMEY, PAUL A · 2001 to 2010
$2.5M
REVERSIBLE FORMATION AND STRUCTURE OF ACTIN NETWORKSR01AR038910 · NIAMS · UNIVERSITY OF PENNSYLVANIA · PI JANMEY, PAUL A · 1991 to 2006
$2.2M
NHLBI NIH HHS R01 HL067286NIAMS NIH HHS R01 AR038910
6 · The paper itself

Abstract

Membrane lipids are active contributors to cell function as key mediators in signaling pathways controlling cell functions including inflammation, apoptosis, migration, and proliferation. Recent work on multimolecular lipid structures suggests a critical role for lipid organization in regulating the function of both lipids and proteins. Of particular interest in this context are the polyphosphoinositides (PPI's), especially phosphatidylinositol (4,5) bisphosphate (PIP 2). The cellular functions of PIP 2 are numerous but the organization of PIP 2 in the inner leaflet of the plasma membrane, as well as the factors controlling targeting of PIP 2 to specific proteins, remains poorly understood. To analyze the organization of PIP 2 in a simplified planar system, we used Langmuir monolayers to study the effects of subphase conditions on monolayers of purified naturally derived PIP 2 and other anionic or zwitterionic phospholipids. We report a significant molecular area expanding effect of subphase monovalent salts on PIP 2 at biologically relevant surface densities. This effect is shown to be specific to PIP 2 and independent of subphase pH. Chaotropic agents (e.g., salts, trehalose, urea, temperature) that disrupt water structure and the ability of water to mediate intermolecular hydrogen bonding also specifically expanded PIP 2 monolayers. These results suggest a combination of water-mediated hydrogen bonding and headgroup repulsion in determining the organization of PIP 2, and may contribute to an explanation for the unique functionality of PIP 2 compared to other anionic phospholipids.

Indexed as

AnimalsCattleHydrogen BondingOsmolar ConcentrationPhosphatidylinositol 4,5-DiphosphatePhosphatidylinositol PhosphatesStatic ElectricitySurface PropertiesSwineTemperaturePhosphatidylinositol 4,5-DiphosphatePhosphatidylinositol Phosphates

Identifiers

PMID18572937
PMCPMC2905661
OpenAlexW2061831882

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.