Evidence map›Paper›PMID 21767488›Full record

ArticleBiophysical journal2011

Electrodynamics of lipid membrane interactions in the presence of zwitterionic buffers.

Megan M Koerner, Luis A Palacio, Johnnie W Wright, Kelly S Schweitzer, Bruce D Ray, Horia I Petrache

Abstract read
In one paragraph

Article in Biophysical journal, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
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

19 citing papers in PubMed.

  1. ICSI media buffers: is there room for improvement?Journal of assisted reproduction and genetics · 2026
    Review
  2. Article
  3. Exploring wide gap semiconductor characteristics inJournal of molecular modeling · 2024
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Anti-F1000Research · 2020
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Phase coexistence in single-lipid membranes induced by buffering agents.Langmuir : the ACS journal of surfaces and colloids · 2014
    Article
  19. 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

6 authors.

Megan M KoernerDepartment of Physics, Indiana University Purdue University Indianapolis, Indianapolis, Indiana, USA.
Luis A Palacio
Johnnie W Wright
Kelly S Schweitzer
Bruce D Ray
Horia I Petrache

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Due to thermal motion and molecular polarizability, electrical interactions in biological systems have a dynamic character. Zwitterions are dipolar molecules that typically are highly polarizable and exhibit both a positive and a negative charge depending on the pH of the solution. We use multilamellar structures of common lipids to identify and quantify the effects of zwitterionic buffers that go beyond the control of pH. We use the fact that the repeat spacing of multilamellar lipid bilayers is a sensitive and accurate indicator of the force balance between membranes. We show that common buffers can in fact charge up neutral membranes. However, this electrostatic effect is not immediately recognized because of the concomitant modification of dispersion (van der Waals) forces. We show that although surface charging can be weak, electrostatic forces are significant even at large distances because of reduced ionic screening and reduced van der Waals attraction. The zwitterionic interactions that we identify are expected to be relevant for interfacial biological processes involving lipid bilayers, and for a wide range of biomaterials, including amino acids, detergents, and pharmaceutical drugs. An appreciation of zwitterionic electrodynamic character can lead to a better understanding of molecular interactions in biological systems and in soft materials in general.

Indexed as

ElectrochemistryBuffersIonsLipid BilayersPhosphatidylcholinesRefractometrySolutionsStatic ElectricityTemperature1,2-linoleoylphosphatidylcholineBuffersIonsLipid BilayersPhosphatidylcholinesSolutions

Identifiers

PMID21767488
PMCPMC3136761

What OpenQuestion holds

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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.