Evidence map›Paper›PMID 22126794›Full record

ArticleMolecular & cellular proteomics : MCP2012

Identification and quantification of S-nitrosylation by cysteine reactive tandem mass tag switch assay.

Christopher I Murray, Helge Uhrigshardt, Robert N O'Meally, Robert N Cole, Jennifer E Van Eyk

Abstract read
In one paragraph

Article in Molecular & cellular proteomics : MCP, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 89 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
89citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

89 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  7. Proteomics of the heart.Physiological reviews · 2024
    Review
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29 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

5 authors.

Christopher I MurrayDepartment of Biological Chemistry, Johns Hopkins University, Baltimore, Maryland 21224, USA.
Helge Uhrigshardt
Robert N O'Meally
Robert N Cole
Jennifer E Van Eyk

Funding

Pathobiology of Cardiac Dyssynchrony &ResynchronizationP01HL077180 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI KASS, DAVID ALAN · 2004 to 2014
$22.8M
SCLERODERMA-ASSOCIATED PAHP50HL084946 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI BLUEMKE, DAVID A. · 2007 to 2011
$20.6M
STRUCTURE OF MITOCHONDRIAL K+ CHANNELSP01HL081427 · NHLBI · JOHNS HOPKINS UNIVERSITY · PI VAN EYK, JENNIFER E · 2005 to 2009
$11.2M
NHLBI NIH HHS P01 HL077180NHLBI NIH HHS P01-HL077180NHLBI NIH HHS P01 HL081427NHLBI NIH HHS P01-HL081427NHLBI NIH HHS P50 HL084946NHLBI NIH HHS P50 HL084946-01
6 · The paper itself

Abstract

Redox-switches are critical cysteine thiols that are modified in response to changes in the cell's environment conferring a functional effect. S-nitrosylation (SNO) is emerging as an important modulator of these regulatory switches; however, much remains unknown about the nature of these specific cysteine residues and how oxidative signals are interpreted. Because of their labile nature, SNO-modifications are routinely detected using the biotin switch assay. Here, a new isotope coded cysteine thiol-reactive multiplex reagent, cysTMT(6), is used in place of biotin, for the specific detection of SNO-modifications and determination of individual protein thiol-reactivity. S-nitrosylation was measured in human pulmonary arterial endothelia cells in vitro and in vivo using the cysTMT(6) quantitative switch assay coupled with mass spectrometry. Cell lysates were treated with S-nitrosoglutathione and used to identify 220 SNO-modified cysteines on 179 proteins. Using this approach it was possible to discriminate potential artifacts including instances of reduced protein disulfide bonds (6) and S-glutathionylation (5) as well as diminished ambiguity in site assignment. Quantitative analysis over a range of NO-donor concentrations (2, 10, 20 μm; GSNO) revealed a continuum of reactivity to SNO-modification. Cysteine response was validated in living cells, demonstrating a greater number of less sensitive cysteine residues are modified with increasing oxidative stimuli. Of note, the majority of available cysteines were found to be unmodified in the current treatment suggesting significant additional capacity for oxidative modifications. These results indicate a possible mechanism for the cell to gauge the magnitude of oxidative stimuli through the progressive and specific accumulation of modified redox-switches.

Indexed as

ProteomicsBiotinBlotting, WesternCells, CulturedCysteineEndothelium, VascularHumansNitric OxideOxidation-ReductionProtein Processing, Post-TranslationalPulmonary ArteryS-NitrosoglutathioneSulfhydryl CompoundsTandem Mass SpectrometryBiotinCysteineNitric OxideS-NitrosoglutathioneSulfhydryl Compounds

Identifiers

PMID22126794
PMCPMC3277766

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.