Spalm_01565 K01738 cysK R00897O-Acetyl-L-serine + Hydrogen sulfide <=> L-Cysteine + Acetate
O3-acetyl-L-serine:hydrogen-sulfide 2-amino-2-carboxyethyltransferase; O3-acetyl-L-serine acetate-lyase (adding hydrogen sulfide) Spalm_01565 K01738 cysK R03601O-Acetyl-L-serine + Hydrogen selenide <=> L-Selenocysteine + Acetate
O3-acetyl-L-serine acetate-lyase (adding hydrogen sulfide) Spalm_01565 K01738 cysK R04859O-Acetyl-L-serine + Thiosulfate + Thioredoxin + H+ <=> L-Cysteine + Sulfite + Thioredoxin disulfide + Acetate
O3-acetyl-L-serine:thiosulfate 2-amino-2-carboxyethyltransferase (reducing, L-cysteine-forming); O3-acetyl-L-serine acetate-lyase (thiosulfate-reducing, L-cysteine-forming)