2-oxo-3-sulfanylpropanoate

1. 3-mercaptopyruvate:sulfide sulfurtransferase

Catalysed by MPST, TSTcytosolOne of 4 routes

1. L-Cysteine:2-oxoglutarate aminotransferase

Catalysed by GOT2, GOT1cytosolOne of 4 routes

1. 3-mercaptopyruvate sulfurtransferase (hydrogen-cyanide)

Catalysed by MPST, TSTcytosol

1. 3-Mercaptolactate:NAD+ oxidoreductase

Catalysed by LDHB, LDHC, LDHAL6A, LDHAL6Bcytosol

1. 2-oxo-3-sulfanylpropanoate + [thioredoxin]-dithiol = [thioredoxin]-disulfide + hydrogen sulfide + pyruvate + H(+)

Catalysed by MPST

1. 3-mercaptopyruvate:sulfide sulfurtransferase

Catalysed by MPST, TSTcytosolOne of 2 routes

1. 2-oxo-3-sulfanylpropanoate + L-kynurenine = kynurenate + L-cysteine + H2O

Catalysed by AADAT

1. L-Cysteine:2-oxoglutarate aminotransferase
2. N-acetylglutamate synthase (N-acetyl-L-cysteine)

Catalysed by GOT2, GOT1, NAGScytosol, mitochondrial matrix

1. 3-mercaptopyruvate:sulfide sulfurtransferase
2. transport of 2-hydroxybutyrate and pyruvate (cytosol to extracellular)

Catalysed by MPST, TST, SLC16A4, SLC16A5 and 4 morecytosol, extracellular spaceOne of 2 routes