Lesson plan
Persulfide
In chemistry, hydropersulfide refers to the functional group R-S-S-H. The anionic form of a hydropersulfide is a persulfide, analogous to the nomenclature for hydroperoxides. Persulfides are intermediates in the biosynthesis of iron-sulfur proteins and are invoked as precursors to hydrogen sulfide, a biological signaling molecule. Hydropersulfides are thought to mediate many of the antioxidant signaling functions once ascribed purely to hydrogen sulfide via modification of protein cysteine (Cys) residues in a process referred to as persulfidation. Hydropersulfides are prototypical reactive sulfur species.
Article summary
In chemistry, hydropersulfide refers to the functional group R-S-S-H. The anionic form of a hydropersulfide is a persulfide, analogous to the nomenclature for hydroperoxides. Persulfides are intermediates in the biosynthesis of iron-sulfur proteins and are invoked as precursors to hydrogen sulfide, a biological signaling molecule. Hydropersulfides are thought to mediate many of the antioxidant signaling functions once ascribed purely to hydrogen sulfide via modification of protein cysteine (Cys) residues in a process referred to as persulfidation. Hydropersulfides are prototypical reactive sulfur species.
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
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