Evidence map›Paper›PMID 23590941›Full record

ArticleChannels (Austin, Tex.)

SLO-2 isoforms with unique Ca(2+) - and voltage-dependence characteristics confer sensitivity to hypoxia in C. elegans.

Zhe Zhang, Qiong-Yao Tang, Joseph T Alaimo, Andrew G Davies, Jill C Bettinger, Diomedes E Logothetis

Open access · goldAbstract read
In one paragraph

Article in Channels (Austin, Tex.). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.7field-weighted citation impact, top 33% 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

7 citing papers in PubMed, 13 citations in OpenAlex.

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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.

Zhe ZhangDepartment of Physiology and Biophysics, Virginia Commonwealth University, Medical College of Virginia Campus, Richmond, VA, USA. zzhang5@vcu.edu
Qiong-Yao Tang
Joseph T Alaimo
Andrew G Davies
Jill C Bettinger
Diomedes E Logothetis
University of Richmond · USVirginia Commonwealth University · USVirginia Commonwealth University Medical Center · US

Funding

Structural Determinants of PIP2 RegulationR01HL059949 · NHLBI · VIRGINIA COMMONWEALTH UNIVERSITY · PI Leigh Daniel Plant · 1998 to 2026
$11.6M
Modulation of Kir Channel Function by PhosphorylationR01HL090882 · NHLBI · VIRGINIA COMMONWEALTH UNIVERSITY · PI LOGOTHETIS, DIOMEDES E. · 2009 to 2012
$1.5M
The Genetics of Acute Tolerance to EthanolR01AA016837 · NIAAA · VIRGINIA COMMONWEALTH UNIVERSITY · PI BETTINGER, JILL C · 2008 to 2012
$1.3M
NHLBI NIH HHS R01 HL059949NHLBI NIH HHS R01HL059949NHLBI NIH HHS R01 HL090882NHLBI NIH HHS R01HL090882NIAAA NIH HHS R01 AA016837NIAAA NIH HHS R01AA016837
6 · The paper itself

Abstract

Slo channels are large conductance K (+) channels that display marked differences in their gating by intracellular ions. Among them, the Slo1 and C. elegans SLO-2 channels are gated by calcium (Ca ( 2+) ), while mammalian Slo2 channels are activated by both sodium (Na (+) ) and chloride (Cl (-) ). Here, we report that SLO-2 channels, SLO-2a and a novel N-terminal variant isoform, SLO-2b, are activated by Ca ( 2+) and voltage, but in contrast to previous reports they do not exhibit Cl (-) sensitivity. Most importantly, SLO-2 provides a unique case in the Slo family for sensing Ca ( 2+) with the high-affinity Ca ( 2+) regulatory site in the RCK1 but not the RCK2 domain, formed through interactions with residues E319 and E487 (that correspond to D362 and E535 of Slo1, respectively). The SLO-2 RCK2 domain lacks the Ca ( 2+) bowl structure and shows minimal Ca ( 2+) dependence. In addition, in contrast to SLO-1, SLO-2 loss-of-function mutants confer resistance to hypoxia in C. elegans. Thus, the C. elegans SLO-2 channels possess unique biophysical and functional properties.

Indexed as

Amino Acid SequenceAnimalsCaenorhabditis elegansCaenorhabditis elegans ProteinsCalciumCalcium ChannelsHypoxiaMembrane Transport ProteinsModels, MolecularMolecular Sequence DataProtein IsoformsCaenorhabditis elegans ProteinsCalciumCalcium ChannelsMembrane Transport ProteinsProtein IsoformsSLO-2 protein, C elegansallosteric regulationCa2+ bindingion channelsmembrane functionpolymerase chain reaction (PCR)protein metal ion interactionSlo channel

Identifiers

PMID23590941
PMCPMC3710346
OpenAlexW2009184628

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.