Detection of Protein S-Sulfhydration by a Tag-Switch Technique

Autor: Dehui Zhang, Jia Pan, Chung-Min Park, Milos R. Filipovic, Nelmi O. Devarie-Baez, Ming Xian, Igor Macinkovic, Kate S. Carroll
Rok vydání: 2013
Předmět:
Zdroj: Angewandte Chemie International Edition. 53:575-581
ISSN: 1433-7851
DOI: 10.1002/anie.201305876
Popis: Protein S-sulfhydration (forming -S-SH adducts from cysteine residues) is a newly defined oxidative posttranslational modification and plays an important role in H2 S-mediated signaling pathways. In this study we report the first selective, "tag-switch" method which can directly label protein S-sulfhydrated residues by forming stable thioether conjugates. Furthermore we demonstrate that H2 S alone cannot lead to S-sulfhydration and that the two possible physiological mechanisms include reaction with protein sulfenic acids (P-SOH) or the involvement of metal centers which would facilitate the oxidation of H2 S to HS(.) .
Databáze: OpenAIRE