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The mechanisms of formation of S-nitrosothiols under physiological conditions and, in particular, of generation of SNO-Hb (the hemoglobin form in which the cysteine residues β93 are S-nitrosated) are still not completely understood. In this paper, we investigated whether, in the presence of O 2 , NO is more efficient to nitrosate protein-bound thiols such as Cysβ93 or low molecular weight...
There has been considerable debate over the nature and chemistry of the interaction between nitric oxide (NO) and red blood cells (RBCs), in particular whether hemoglobin consumes or conserves NO bioactivity. Given the vast range of nitrosation levels reported for human RBCs in the literature, we sought to investigate whether there was a common denominator that could account for such discrepancies...
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