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Kinetics of Azanone (HNO) Reactions with Thiols: Effect of pH. | LitMetric

AI Article Synopsis

Article Abstract

HNO (nitroxyl, IUPAC name azanone) is an electrophilic reactive nitrogen species of growing pharmacological and biological significance. Here, we present data on the pH-dependent kinetics of azanone reactions with the low molecular thiols glutathione and N-acetylcysteine, as well as with important serum proteins: bovine serum albumin and human serum albumin. The competition kinetics method used is based on two parallel HNO reactions: with RSH/RS or with O. The results provide evidence that the reaction of azanone with the anionic form of thiols (RS) is favored over reactions with the protonated form (RSH). The data are supported with quantum mechanical calculations. A comprehensive discussion of the HNO reaction with thiolates is provided.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8558164PMC
http://dx.doi.org/10.1007/s12013-021-00986-xDOI Listing

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