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S‐sulfuration by H2Sn diffusion and that by 3‐mercaptopyruvate sulfurtransferase (MPST). (a) MPST produces H2Sn which reach by diffusion to S‐sulfurate H2S, cysteine, GSH, and cysteine residues of proteins. (b) MPST transfers sulfur from 3‐mercaptopyruvate (MP) to H2S, cysteine, GSH, and cysteine residues of proteins without being mediated by H2Sn (trans‐sulfuration). This figure is produced by modifying Kimura et al. (2017)
