Evidence map›Paper›PMID 17360683›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2007

Apoptotic surge of potassium currents is mediated by p38 phosphorylation of Kv2.1.

Patrick T Redman, Kai He, Karen A Hartnett, Bahiyya S Jefferson, Linda Hu, Paul A Rosenberg, Edwin S Levitan, Elias Aizenman

Open access · greenAbstract readComparative Study
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 88 papers.

0numbers the graph read from it
0cells of the map it votes in
88citing papers in PubMed
4.0field-weighted citation impact, top 6% 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

88 citing papers in PubMed, 139 citations in OpenAlex.

  1. Review
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  8. Antagonistic roles of Ras-MAPK and Akt signaling in integrin-KFASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2022
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  15. Tyrosine Phosphorylation of the KInternational journal of molecular sciences · 2020
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  17. Review
  18. Review
  19. Article
  20. Review

28 more citing papers are in PubMed but not listed here.

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

8 authors at 4 institutions in 1 country.

Patrick T RedmanDepartment of Neurobiology and Pharmacology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA.
Kai He
Karen A Hartnett
Bahiyya S Jefferson
Linda Hu
Paul A Rosenberg
Edwin S Levitan
Elias Aizenman
Albert Einstein College of Medicine · USBoston Children's Hospital · USHarvard University · USUniversity of Pittsburgh · US

Funding

SYNAPTIC MECHANISMS IN HIPPOCAMPAL EPILEPTOGENESISP30HD018655 · NICHD · CHILDREN'S HOSPITAL BOSTON · PI POMEROY, SCOTT LOREN · 1985 to 2015
$26.2M
Liberation of Intracellular Zinc and Neuronal Cell DeathR01NS043277 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI AIZENMAN, ELIAS · 2002 to 2022
$8.2M
Regulation of Cardiac Kv Channel ExpressionR01HL080632 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI LEVITAN, EDWIN S · 2006 to 2013
$2.6M
Liberation of Intracellular Zinc and Neuronal Cell DeathR56NS043277 · NINDS · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI AIZENMAN, ELIAS · 2007 to 2007
$371k
NHLBI NIH HHS HL080632NHLBI NIH HHS R01 HL080632NICHD NIH HHS HD018655NICHD NIH HHS P30 HD018655NINDS NIH HHS NS043277NINDS NIH HHS R01 NS043277NINDS NIH HHS R56 NS043277
6 · The paper itself

Abstract

Kv2.1, the primary delayed rectifying potassium channel in neurons, is extensively regulated by phosphorylation. Previous reports have described Kv2.1 phosphorylation events affecting channel gating and the impact of this process on cellular excitability. Kv2.1, however, also provides the critical exit route for potassium ions during neuronal apoptosis via p38 MAPK-dependent membrane insertion, resulting in a pronounced enhancement of K(+) currents. Here, electrophysiological and viability studies using Kv2.1 channel mutants identify a p38 phosphorylation site at Ser-800 (S800) that is required for Kv2.1 membrane insertion, K(+) current surge, and cell death. In addition, a phospho-specific antibody for S800 detects a p38-dependent increase in Kv2.1 phosphorylation in apoptotic neurons and reveals phosphorylation of S800 in immunopurified channels incubated with active p38. Consequently, phosphorylation of Kv2.1 residue S800 by p38 leads to trafficking and membrane insertion during apoptosis, and remarkably, the absence of S800 phosphorylation is sufficient to prevent completion of the cell death program.

Indexed as

AnimalsApoptosisCHO CellsCricetinaeCricetulusElectrophoresis, Polyacrylamide GelElectrophysiologyGreen Fluorescent ProteinsImmunoblottingMutagenesis, Site-DirectedNeuronsp38 Mitogen-Activated Protein KinasesPhosphorylationPotassiumShab Potassium Channelsenhanced green fluorescent proteinGreen Fluorescent Proteinsp38 Mitogen-Activated Protein KinasesPotassiumShab Potassium Channels

Identifiers

PMID17360683
PMCPMC1805571
OpenAlexW1982715379

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.