Status Description Organism Genes References
cystathionine gamma-lyase Achromobacter xylosoxidans mccB
cystathionine gamma-lyase MccB Bacillus licheniformis mccB
cystathionine gamma-lyase Bacillus megaterium mccB
homocysteine desulfhydrase Clostridium ljungdahlii GHMO-1206
mccB: cystathionine gamma-lyase Clostridium saccharobutylicum G134E-283
homocysteine desulfhydrase Geobacillus thermoglucosidasius GHH3-1076
cystathionine gamma-lyase / homocysteine gamma-lyase Halobacillus halophilus mccB
cystathionine gamma-lyase Lachnoanaerobaculum saburreum mccB
homocysteine desulfhydrase Methanosarcina acetivorans GI2O-808
homocysteine desulfhydrase Methanosarcina barkeri GHUW-1726