MassIVE MSV000086125

Partial Public PXD021438

Identification of sulfenylation patterns in Plasmodium falciparum using a non-dimedone based probe

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Description

Plasmodium falciparum causes the deadliest form of malaria. Adequate redox control is crucial for this protozoan parasite to overcome oxidative and nitrosative challenges, thus enabling its survival. Sulfenylation is an oxidative post-translational modification, which acts as a molecular on/off switch, regulating protein activity. To obtain a better understanding of which proteins are redox regulated in malaria parasites, we established an optimized affinity capture protocol coupled with mass spectrometry analysis for identification of in vivo sulfenylated proteins. The non-dimedone based probe BCN-Bio1 shows reaction rates over 100-times that of commonly used dimedone-based probes, allowing for a rapid trapping of sulfenylated proteins. Mass spectrometry analysis of BCN-Bio1 labeled proteins revealed the first insight into the Plasmodium falciparum sulfenylome, identifying 102 proteins containing 152 sulfenylation sites. Comparison with Plasmodium proteins modified by S-glutathionylation and S-nitrosation showed a high overlap, suggesting a common core of proteins undergoing redox regulation by multiple mechanisms. Furthermore, parasite proteins which were identified as targets for sulfenylation were also identified as being sulfenylated in other organisms, especially proteins of the glycolytic cycle. This study suggests that a number of Plasmodium proteins are subject to redox regulation and it provides a basis for further investigations into the exact structural and biochemical basis of regulation, and a deeper understanding of cross-talk between post-translational modifications. [doi:10.25345/C5Z76W] [dataset license: CC0 1.0 Universal (CC0 1.0)]

Keywords: Sulfenylation ; 9-hydroxymethylbicyclo[6.1.0]nonyne (BCN-Bio1) ; malaria ; redox proteomics ; cysteine modification ; post-translational modification

Contact

Principal Investigators:
(in alphabetical order) 		Jude M. Przyborskia, Department of Biochemistry and Molecular Biology, Interdisciplinary Research Center, Justus Liebig University Giessen, Germany
Submitting User: salvador

Publications

Schipper S, Wu H, Furdui CM, Poole LB, Delahunty CM, Park R, Yates JR, Becker K, Przyborski JM.
Identification of sulfenylation patterns in trophozoite stage Plasmodium falciparum using a non-dimedone based probe.
Mol Biochem Parasitol. Epub 2021 Jan 26.

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