Cysteine is degraded to pyruvate and H2S
H2O + L-Cys → H+ + NH4+ + PYR + H2S
- Reactome
- R-HSA-1614614
- Compartment
- cytosol
- Rhea
- RHEA:24932
Inputs
- H2OCHEBI:15377, H2O, cytosol
- L-CysCHEBI:35235, C3H7NO2S, cytosol
Outputs
- H+CHEBI:15378, H, cytosol
- NH4+CHEBI:28938, H4N, cytosol
- PYRCHEBI:15361, C3H3O3, cytosol
- H2SCHEBI:29919, HS, cytosol
Catalysed by
- carbon-sulfur lyase activity of PXLP-K212-CTH tetramer [cytosol]EC 4.4
Literature
- H2S biogenesis by human cystathionine gamma-lyase leads to the novel sulfur metabolites lanthionine and homolanthionine and is responsive to the grade of hyperhomocysteinemia J Biol Chem, 2009
- Kinetics and inhibition of recombinant human cystathionine gamma-lyase. Toward the rational control of transsulfuration J Biol Chem, 1999