Evidence map›Paper›PMID 21262274›Full record

ReviewBiochimica et biophysica acta2011

Insights into modulation of calcium signaling by magnesium in calmodulin, troponin C and related EF-hand proteins.

Zenon Grabarek

Abstract readReview
In one paragraph

Review in Biochimica et biophysica acta, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.

0numbers the graph read from it
0cells of the map it votes in
75citing papers in PubMed
6.8field-weighted citation impact, top 3% 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

75 citing papers in PubMed, 124 citations in OpenAlex.

  1. Trial
  2. Host-derived stimuli alter intracellular calcium levels inApplied and environmental microbiology · 2026
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  8. The NbCBP1-NbSAMS1 Module Promotes Ethylene Accumulation to EnhanceInternational journal of molecular sciences · 2025
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  15. Recognition ofBiology · 2024
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15 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

1 author at 1 institution in 1 country.

Zenon GrabarekBoston Biomedical Research Institute, 64 Grove Street, Watertown, MA 02472-2829, USA. Grabarek@BBRI.org
Boston Biomedical Research Institute · US

Funding

Troponin and myosin in regulation of muscle contraction and heart diseaseR01HL091162 · NHLBI · BOSTON BIOMEDICAL RESEARCH INSTITUTE · PI GRABAREK, ZENON · 2009 to 2012
$2.0M
NHLBI NIH HHS R01 HL091162
6 · The paper itself

Abstract

The Ca(2+)-binding helix-loop-helix structural motif called "EF-hand" is a common building block of a large family of proteins that function as intracellular Ca(2+)-receptors. These proteins respond specifically to micromolar concentrations of Ca(2+) in the presence of ~1000-fold excess of the chemically similar divalent cation Mg(2+). The intracellular free Mg(2+) concentration is tightly controlled in a narrow range of 0.5-1.0mM, which at the resting Ca(2+) levels is sufficient to fully or partially saturate the Ca(2+)-binding sites of many EF-hand proteins. Thus, to convey Ca(2+) signals, EF-hand proteins must respond differently to Ca(2+) than to Mg(2+). In this review the structural aspects of Mg(2+) binding to EF-hand proteins are considered and interpreted in light of the recently proposed two-step Ca(2+)-binding mechanism (Grabarek, Z., J. Mol. Biol., 2005, 346, 1351). It is proposed that, due to stereochemical constraints imposed by the two-EF-hand domain structure, the smaller Mg(2+) ion cannot engage the ligands of an EF-hand in the same way as Ca(2+) and defaults to stabilizing the apo-like conformation of the EF-hand. It is proposed that Mg(2+) plays an active role in the Ca(2+)-dependent regulation of cellular processes by stabilizing the "off state" of some EF-hand proteins, thereby facilitating switching off their respective target enzymes at the resting Ca(2+) levels. Therefore, some pathological conditions attributed to Mg(2+) deficiency might be related to excessive activation of underlying Ca(2+)-regulated cellular processes. This article is part of a Special Issue entitled: 11th European Symposium on Calcium.

Indexed as

Calcium SignalingEF Hand MotifsAnimalsCalmodulinHumansMagnesiumModels, MolecularTroponin CCalmodulinMagnesiumTroponin C

Identifiers

PMID21262274
PMCPMC3078997
OpenAlexW2096887440

What OpenQuestion holds

Textmetadata
LicenceTDM
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.