Evidence map›Paper›PMID 24127524›Full record

ArticleThe Journal of general physiology2013

Sensing charges of the Ciona intestinalis voltage-sensing phosphatase.

Carlos A Villalba-Galea, Ludivine Frezza, Walter Sandtner, Francisco Bezanilla

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of general physiology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers.

0numbers the graph read from it
0cells of the map it votes in
33citing papers in PubMed
2.1field-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

33 citing papers in PubMed, 43 citations in OpenAlex.

  1. Voltage sensors.Molecular pharmacology · 2025
    Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Article
  9. Mechanism of voltage gating in the voltage-sensing phosphatase Ci-VSP.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  10. Article
  11. The voltage sensor is responsible for ΔpH dependence in HProceedings of the National Academy of Sciences of the United States of America · 2021
    Article
  12. Article
  13. Molecular mechanisms of coupling to voltage sensors in voltage-evoked cellular signals.Proceedings of the Japan Academy. Series B, Physical and biological sciences · 2019
    Review
  14. Article
  15. Gating-induced large aqueous volumetric remodeling and aspartate tolerance in the voltage sensor domain of Shaker KProceedings of the National Academy of Sciences of the United States of America · 2018
    Article
  16. The solute carrier SLC9C1 is a NaNature communications · 2018
    Article
  17. Article
  18. Article
  19. Article
  20. Hysteresis in voltage-gated channels.Channels (Austin, Tex.) · 2017
    Review
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

4 authors at 3 institutions in 2 countries.

Carlos A Villalba-GaleaDepartment of Physiology and Biophysics, Virginia Commonwealth University School of Medicine, Richmond, VA 23298.
Ludivine Frezza
Walter Sandtner
Francisco Bezanilla
University of Chicago · USMedical University of Vienna · ATVirginia Commonwealth University · US

Funding

Center for Clinical and Translational ResearchUL1TR000058 · NCATS · VIRGINIA COMMONWEALTH UNIVERSITY · PI MOELLER, FREDERICK GERARD · 2012 to 2015
$12.5M
The Electrophysiological Studies of Voltage Gated ChannelsR01GM030376 · NIGMS · UNIVERSITY OF CHICAGO · PI BEZANILLA, FRANCISCO J · 1985 to 2025
$9.1M
ELECTROPHYSIOLOGICAL STUDIES OF VOLTAGE GATED CHANNELSR37GM030376 · NIGMS · UNIVERSITY OF CHICAGO · PI BEZANILLA, FRANCISCO J · 1999 to 2008
$3.7M
Center for Clinical and Translational ResearchKL2TR000057 · NCATS · VIRGINIA COMMONWEALTH UNIVERSITY · PI MOELLER, FREDERICK GERARD · 2012 to 2014
$1.4M
NCATS NIH HHS KL2 TR000057NCATS NIH HHS UL1 TR000058NIGMS NIH HHS GM030376NIGMS NIH HHS R01 GM030376NIGMS NIH HHS R37 GM030376
6 · The paper itself

Abstract

Voltage control over enzymatic activity in voltage-sensitive phosphatases (VSPs) is conferred by a voltage-sensing domain (VSD) located in the N terminus. These VSDs are constituted by four putative transmembrane segments (S1 to S4) resembling those found in voltage-gated ion channels. The putative fourth segment (S4) of the VSD contains positive residues that likely function as voltage-sensing elements. To study in detail how these residues sense the plasma membrane potential, we have focused on five arginines in the S4 segment of the Ciona intestinalis VSP (Ci-VSP). After implementing a histidine scan, here we show that four arginine-to-histidine mutants, namely R223H to R232H, mediate voltage-dependent proton translocation across the membrane, indicating that these residues transit through the hydrophobic core of Ci-VSP as a function of the membrane potential. These observations indicate that the charges carried by these residues are sensing charges. Furthermore, our results also show that the electrical field in VSPs is focused in a narrow hydrophobic region that separates the extracellular and intracellular space and constitutes the energy barrier for charge crossing.

Indexed as

AnimalsCiona intestinalisHumansHydrophobic and Hydrophilic InteractionsIon Channel GatingMembrane PotentialsModels, BiologicalMutagenesis, Site-DirectedPhosphoric Monoester HydrolasesProtein Structure, TertiaryProtonsPhosphoric Monoester HydrolasesProtonsvoltage-sensor-containing phosphatase, Ciona intestinalis

Identifiers

PMID24127524
PMCPMC3813379
OpenAlexW2158419278

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.