Evidence map›Paper›PMID 20676672›Full record

ArticlePflugers Archiv : European journal of physiology2010

Functional consequences of Kir2.1/Kir2.2 subunit heteromerization.

Brian K Panama, Meredith McLerie, Anatoli N Lopatin

Open access · hybridAbstract read
In one paragraph

Article in Pflugers Archiv : European journal of physiology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
0.5field-weighted citation impact, top 35% 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

12 citing papers in PubMed, 19 citations in OpenAlex.

  1. The network of cardiac KNaunyn-Schmiedeberg's archives of pharmacology · 2024
    Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Kir2.2 p.Thr140Met: a genetic susceptibility to sporadic periodic paralysis.Acta myologica : myopathies and cardiomyopathies : official journal of the Mediterranean Society of Myology · 2018
    Article
  8. Article
  9. Article
  10. CaMKII regulation of cardiac K channels.Frontiers in pharmacology · 2014
    Review
  11. Article
  12. 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

3 authors at 1 institution in 2 countries.

Brian K PanamaDepartment of Molecular and Integrative Physiology, University of Michigan Medical School, 1301 E Catherine St, Room 7812 Medical Science II, Ann Arbor, MI 48109-5622, USA. brian.panama@utoronto.ca
Meredith McLerie
Anatoli N Lopatin
University of Michigan–Ann Arbor · US

Funding

SYTEMS AND INTEGRATIVE BIOLOGYT32GM008322 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LOW, MALCOLM JAMES · 1990 to 2020
$5.7M
Inward Rectifier Potassium Channels and Cardiac ExcitabilityR01HL069052 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI LOPATIN, ANATOLI N · 2002 to 2010
$2.8M
NHLBI NIH HHS R01 HL069052NHLBI NIH HHS R01-HL-069052NIGMS NIH HHS T-32GM008322NIGMS NIH HHS T32 GM008322
6 · The paper itself

Abstract

Kir2 subunits form channels that underlie classical strongly inwardly rectifying potassium currents. While homomeric Kir2 channels display a number of distinct and physiologically important properties, the functional properties of heteromeric Kir2 assemblies, as well as the stoichiometries and the arrangements of Kir2 subunits in native channels, remain largely unknown. Therefore, we have implemented a concatemeric approach, whereby all four cloned Kir2 subunits were linked in tandem, in order to study the effects of Kir2.1 and Kir2.2 heteromerization on properties of the resulting channels. Kir2.2 subunits contributed stronger to single-channel conductance than Kir2.1 subunits, and channels containing two or more Kir2.2 subunits displayed conductances indistinguishable from that of a Kir2.2 homomeric channel. In contrast, single-channel kinetics was a more discriminating property. The open times were significantly shorter in Kir2.2 channels compared with Kir2.1 channels and decreased nearly proportionally to the number of Kir2.2 subunits in the heteromeric channel. Similarly, the sensitivity to block by barium also depended on the proportions of Kir2.1 to Kir2.2 subunits. Overall, the results showed that Kir2.1 and Kir2.2 subunits exert neither a dominant nor an anomalous effect on any of the properties of heteromeric channels. The data highlight opportunities and challenges of using differential properties of Kir2 channels in deciphering the subunit composition of native inwardly rectifying potassium currents.

Indexed as

AnimalsBariumCloning, MolecularHEK293 CellsHumansMicePotassium Channels, Inwardly RectifyingBariumKir2.1 channelKir2.2 channelPotassium Channels, Inwardly Rectifying

Identifiers

PMID20676672
PMCPMC2937153
OpenAlexW1992061772

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.