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. 2021 Nov 5;70(1):1–6. doi: 10.3164/jcbn.21-84

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Fig. 1. — The scheme of metabolic pathway of persulfides and sulfides. Enzymes are shown in gray background. Cys-SH, cysteine; Cys-SSH, cysteine persulfide; Cys-SS-Cys, cystine; protein-SSH, protein persulfide; H₂S/HS⁻, hydrogen sulfide/hydrogen sulfide anion; GSH, glutathione; GSSH, glutathione persulfide; SO₃²⁻, sulfite; SO₄²⁻, sulfate; CARS, cysteinyl-tRNA synthetase; CBS, cystathionine β-synthase; CSE, cystathionine γ-lyase, SQR, sulfide quinone reductase; ETHE1, ethylmalonic encephalopathy protein 1; SO, sulfite oxidase.