Evidence map›Paper›PMID 9284311›Full record

ArticleBiophysical journal1997

The structure of divalent cation-induced aggregates of PIP2 and their alteration by gelsolin and tau.

L A Flanagan, C C Cunningham, J Chen, G D Prestwich, K S Kosik, P A Janmey

Open access · bronzeAbstract readComparative Study
In one paragraph

Article in Biophysical journal, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
2.2field-weighted citation impact, top 13% 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

30 citing papers in PubMed, 86 citations in OpenAlex.

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  7. Roles of tau protein in health and disease.Acta neuropathologica · 2017
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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 at 3 institutions in 1 country.

L A FlanaganDepartment of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts 02115, USA. flanagan@calvin.bwh.harvard.edu
C C Cunningham
J Chen
G D Prestwich
K S Kosik
P A Janmey
Brigham and Women's Hospital · USUniversity of Utah · USHarvard University · US

Funding

NEURONAL POLARITY--DISRUPTION IN AGING AND ALZHEIMERSR01NS029031 · NINDS · BRIGHAM AND WOMEN'S HOSPITAL · PI KOSIK, KENNETH S · 1991 to 2000
$297k
COORDINATION OF ACTIN AND MICROTUBLES BY MAP2C AND TAUF32GM018859 · NIGMS · BRIGHAM AND WOMEN'S HOSPITAL · PI FLANAGAN, LISA A · 1997 to 1999
–
NHLBI NIH HHS HL07680NIGMS NIH HHS GM18859NINDS NIH HHS NS29031
6 · The paper itself

Abstract

Phosphatidylinositol bisphosphate (PIP2) serves as a precursor for diacylglycerol and inositol trisphosphate in signal transduction cascades and regulates the activities of several actin binding proteins that influence the organization of the actin cytoskeleton. Molecules of PIP2 form 6-nm diameter micelles in water, but aggregate into larger, multilamellar structures in physiological concentrations of divalent cations. Electron microscopic analysis of these aggregates reveals that they are clusters of striated filaments, suggesting that PIP2 aggregates form stacks of discoid micelles rather than multilamellar vesicles or inverted hexagonal arrays as previously inferred from indirect observations. The distance between striations within the filaments varies from 4.2 to 5.4 nm and the diameter of the filaments depends on the dehydrated ionic radius of the divalent cation, with average diameters of 19, 12, and 10 nm for filaments formed by Mg2+, Ca2+, and Ba2+, respectively. The structure of the divalent cation-induced aggregates can be altered by PIP2 binding proteins. Gelsolin and the microtubule associated protein tau both affect the formation of aggregates, indicating that tau acts as a PIP2 binding protein in a manner similar to gelsolin. In contrast, another PIP2 binding protein, profilin, does not modify the aggregates.

Indexed as

BariumCalciumCations, DivalentMagnesiumGelsolinMicellesMicroscopy, ElectronPhosphatidylinositol 4,5-DiphosphateProtein BindingScattering, Radiationtau ProteinsBariumCalciumCations, DivalentGelsolinMagnesiumMicellesPhosphatidylinositol 4,5-Diphosphatetau Proteins

Identifiers

PMID9284311
PMCPMC1181043
OpenAlexW2035095021

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.