Evidence map›Paper›PMID 19692331›Full record

ArticleThe Journal of biological chemistry2009

Stereochemical configuration of 4-hydroxy-2-nonenal-cysteine adducts and their stereoselective formation in a redox-regulated protein.

Chika Wakita, Takuya Maeshima, Atsushi Yamazaki, Takahiro Shibata, Sohei Ito, Mitsugu Akagawa, Makoto Ojika, Junji Yodoi, Koji Uchida

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

25 citing papers in PubMed, 49 citations in OpenAlex.

  1. Lipid Peroxidation-Related Redox Signaling in Osteosarcoma.International journal of molecular sciences · 2024
    Review
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. Review
  9. Getting the Message? Native Reactive Electrophiles Pass Two Out of Three Thresholds to be Bona Fide Signaling Mediators.BioEssays : news and reviews in molecular, cellular and developmental biology · 2018
    Review
  10. Review
  11. Review
  12. Article
  13. Article
  14. Article
  15. Detection of electrophile-sensitive proteins.Biochimica et biophysica acta · 2014
    Review
  16. Review
  17. Review
  18. Article
  19. Article
  20. 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

9 authors at 4 institutions in 1 country.

Chika WakitaGraduate School of Bioagricultural Sciences, Nagoya University, Nagoya 464-8601, Japan.
Takuya Maeshima
Atsushi Yamazaki
Takahiro Shibata
Sohei Ito
Mitsugu Akagawa
Makoto Ojika
Junji Yodoi
Koji Uchida
Nagoya University · JPKyoto University · JPOsaka Prefecture University · JPUniversity of Shizuoka · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

4-Hydroxy-2-nonenal (HNE), a major racemic product of lipid peroxidation, preferentially reacts with cysteine residues to form a stable HNE-cysteine Michael addition adduct possessing three chiral centers. Here, to gain more insight into sulfhydryl modification by HNE, we characterized the stereochemical configuration of the HNE-cysteine adducts and investigated their stereoselective formation in redox-regulated proteins. To characterize the HNE-cysteine adducts by NMR, the authentic (R)-HNE- and (S)-HNE-cysteine adducts were prepared by incubating N-acetylcysteine with each HNE enantiomer, both of which provided two peaks in reversed-phase high performance liquid chromatography (HPLC). The NMR analysis revealed that each peak was a mixture of anomeric isomers. In addition, mutarotation at the anomeric center was also observed in the analysis of the nuclear Overhauser effect. To analyze these adducts in proteins, we adapted a pyridylamination-based approach, using 2-aminopyridine in the presence of sodium cyanoborohydride, which enabled analyzing the individual (R)-HNE- and (S)-HNE-cysteine adducts by reversed-phase HPLC following acid hydrolysis. Using the pyridylamination method along with mass spectrometry, we characterized the stereoselective formation of the HNE-cysteine adducts in human thioredoxin and found that HNE preferentially modifies Cys(73) and, to the lesser extent, the active site Cys(32). More interestingly, the (R)-HNE- and (S)-HNE-cysteine adducts were almost equally formed at Cys(73), whereas Cys(32) exhibited a remarkable preference for the adduct formation with (R)-HNE. Finally, the utility of the method for the determination of the HNE-cysteine adducts was confirmed by an in vitro study using HeLa cells. The present results not only offer structural insight into sulfhydryl modification by lipid peroxidation products but also provide a platform for the chemical analysis of protein S-associated aldehydes in vitro and in vivo.

Indexed as

AldehydesBorohydridesChromatography, High Pressure LiquidCysteineHeLa CellsHumansLipid PeroxidationMagnetic Resonance SpectroscopyMass SpectrometryModels, ChemicalOxidation-ReductionPeptidesProteinsRecombinant ProteinsStereoisomerism4-hydroxy-2-nonenalAldehydesBorohydridesCysteinePeptidesProteinsRecombinant Proteinssodium cyanoborohydride

Identifiers

PMID19692331
PMCPMC2781427
OpenAlexW2002096607

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.