Evidence map›Paper›PMID 18369661›Full record

ArticlePflugers Archiv : European journal of physiology2008

Oxidation of multiple methionine residues impairs rapid sodium channel inactivation.

Mario Kassmann, Alfred Hansel, Enrico Leipold, Jan Birkenbeil, Song-Qing Lu, Toshinori Hoshi, Stefan H Heinemann

Open access · greenAbstract read
In one paragraph

Article in Pflugers Archiv : European journal of physiology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing 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

40 citing papers in PubMed, 83 citations in OpenAlex.

  1. Article
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  4. A Possible Role of Tetrodotoxin-Sensitive NaInternational journal of molecular sciences · 2024
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  15. Oxidation of methionine residues activates the high-threshold heat-sensitive ion channel TRPV2.Proceedings of the National Academy of Sciences of the United States of America · 2019
    Article
  16. Article
  17. Review
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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

7 authors at 2 institutions in 2 countries.

Mario KassmannCenter for Molecular Biomedicine, Department of Biophysics, Friedrich Schiller University Jena, Hans-Knöll-Str. 2, 07745, Jena, Germany.
Alfred Hansel
Enrico Leipold
Jan Birkenbeil
Song-Qing Lu
Toshinori Hoshi
Stefan H Heinemann
Friedrich Schiller University Jena · DEUniversity of Pennsylvania · US

Funding

REGULATION OF ION CHANNELS BY METHIONINE OXIDATIONR01GM057654 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI HOSHI, TOSHINORI, OLCESE, RICCARDO · 1998 to 2014
$5.0M
NIGMS NIH HHS R01 GM057654
6 · The paper itself

Abstract

Reactive oxygen species (ROS) readily oxidize the sulfur-containing amino acids cysteine and methionine (Met). The impact of Met oxidation on the fast inactivation of the skeletal muscle sodium channel Na(V)1.4 expressed in mammalian cells was studied by applying the Met-preferring oxidant chloramine-T or by irradiating the ROS-producing dye Lucifer Yellow in the patch pipettes. Both interventions dramatically slowed down inactivation of the sodium channels. Replacement of Met in the Ile-Phe-Met inactivation motif with Leu (M1305L) strongly attenuated the oxidizing effect on inactivation but did not eliminate it completely. Mutagenesis of Met1470 in the putative receptor of the inactivation lid also markedly diminished the oxidation sensitivity of the channel, while that of other conserved Met residues in intracellular linkers connecting the membrane-spanning segments (442, 1139, 1154, 1316, 1469) were of minor importance. The results of mutagenesis, assays of other Na(V) channel isoforms (Na(V)1.2, Na(V)1.5, Na(V)1.7), and the kinetics of the oxidation-induced removal of inactivation collectively indicate that multiple Met residues need to be oxidized to completely impair inactivation. This arrangement using multiple Met residues confers a finely graded oxidative modulation of Na(V) channels and allows organisms to adapt to a variety of oxidative stress conditions, such as ischemic reperfusion.

Indexed as

AlgorithmsCells, CulturedChloraminesData Interpretation, StatisticalElectrophysiologyFluorescent DyesHumansIsoquinolinesKineticsMethionineMuscle ProteinsMutagenesisNAV1.4 Voltage-Gated Sodium ChannelOxidation-ReductionPatch-Clamp TechniquesPlasmidsChloramineschloramine-TFluorescent DyesIsoquinolineslucifer yellowMethionineMuscle ProteinsNAV1.4 Voltage-Gated Sodium ChannelSCN4A protein, humanSodium Channel BlockersSodium ChannelsTosyl Compounds

Identifiers

PMID18369661
PMCPMC2913308
OpenAlexW2039512686

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.