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Biochemical Functions of Persulfides
1982In biological systems, persulfides (RSS-) are reactive, unstable intermediates in the transformations of sulfur compounds. Persulfides are also referred to as polysulfides, or alkyl/aryl hydrogen disulfides. The persulfide sulfur is commonly termed, “sulfane”, to designate sulfur covalently bonded only to other sulfur atoms.
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Biological chemistry of hydrogen sulfide and persulfides
Archives of Biochemistry and Biophysics, 2017Hydrogen sulfide (H2S) has been traditionally considered to be a toxic molecule for mammals. However, it can be formed endogenously and exert physiological effects with potential health benefits. H2S can partition two-fold in biological membranes and traverse them rapidly, diffusing between compartments.
Ernesto, Cuevasanta +2 more
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Protein Persulfidation: Recent Progress and Future Directions
Antioxidants & Redox Signaling, 2023Significance: Hydrogen sulfide (H 2 S) is considered to be a gasotransmitter along with carbon monoxide (CO) and nitric oxide (NO), and is known as a key regulator of physiological and pathological activities.
Shanshan Luo +8 more
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Persulfidation (S-sulfhydration) and H2S
2015The past decade has witnessed the discovery of hydrogen sulfide (H2S) as a new signalling molecule. Its ability to act as a neurotransmitter, regulator of blood pressure, immunomodulator or anti-apoptotic agent, together with its great pharmacological potential, is now well established.
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Persulfides, at the crossroads between hydrogen sulfide and thiols
Essays in Biochemistry, 2020Abstract Persulfides (RSSH/RSS−) can be formed in protein and non-protein thiols (RSH) through several different pathways, some of which are dependent on hydrogen sulfide (H2S/HS−). In addition to their roles in biosynthetic processes, persulfides are possible transducers of physiological effects of H2S through the modification of ...
Dayana Benchoam +3 more
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Thiiranes: Intelligent Molecules for S-Persulfidation
Journal of the American Chemical SocietyThis study presents a global strategy for the transsulfuration of intracellular thiols (RSH) to persulfides (RSSH). Thiiranes comprising fluorenyl/diphenyl and malonate ester moieties directly convert intercellular RSH to low-molecular-weight RSSH in cells.
Hoe-In Kim +6 more
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Generation of reactive oxygen species by a persulfide (BnSSH)
Bioorganic & Medicinal Chemistry Letters, 2005Hydropersulfides (RS(x)SH) have been implicated as important intermediates in the cell-killing action of the anticancer natural products leinamycin and varacin. It has been suggested that persulfides can mediate the conversion of molecular oxygen to reactive oxygen species (O2*-, H2O2, and HO*).
Tonika, Chatterji +2 more
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Transfer of persulfide sulfur from thiocystine to rhodanese
Biochimica Et Biophysica Acta - Biomembranes, 1979THiocystine (bis-[2-amino-2-carboxyethyl]trisulfide) is a natural substrate for rhodanese (thiosulfate:cyanide sulfurtransferase, EC 2.8.1.1). Analogs of thiocystine were prepared by eliminating the carboxyl or amino group or by lengthening the carbon chain.
R, Abdolrasulnia, J L, Wood
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Structural Properties and Torsional Dynamics of Peroxides and Persulfides
2009For the study of molecules containing O—O and S—S bonds, an analysis on the effect of level of theory and basis sets on electronic properties and geometrical parameters for H2O2 and H2S2 was done. Substitutions of one or both hydrogens in these molecules either by halogen atoms or alkyl groups were investigated for properties like geometries, dipole ...
MACIEL, GLAUCIETE SARMENTO +4 more
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