KEGG   REACTION: R04859
Entry
R04859                      Reaction                               
Name
O3-acetyl-L-serine:thiosulfate 2-amino-2-carboxyethyltransferase (reducing, L-cysteine-forming);
O3-acetyl-L-serine acetate-lyase (thiosulfate-reducing, L-cysteine-forming)
Definition
O-Acetyl-L-serine + Thiosulfate + Thioredoxin + H+ <=> L-Cysteine + Sulfite + Thioredoxin disulfide + Acetate
Equation
C00979 + C00320 + C00342 + C00080 <=> C00097 + C00094 + C00343 + C00033
Reaction class
RC00013  C00342_C00343
RC00020  C00033_C00979
RC02813  C00094_C00320
RC02821  C00097_C00979
Enzyme
2.5.1.47        2.5.1.49
Brite
Enzymatic reactions [BR:br08201]
 2. Transferase reactions
  2.5  Transferring alkyl or aryl groups, other than methyl groups
   2.5.1  Transferring alkyl or aryl groups, other than methyl groups (only sub-subclass identified to date)
    2.5.1.47
     R04859  O-Acetyl-L-serine + Thiosulfate + Thioredoxin + H+ <=> L-Cysteine + Sulfite + Thioredoxin disulfide + Acetate
    2.5.1.49
     R04859  O-Acetyl-L-serine + Thiosulfate + Thioredoxin + H+ <=> L-Cysteine + Sulfite + Thioredoxin disulfide + Acetate
Orthology
K01738  cysteine synthase [EC:2.5.1.47]
K01740  O-acetylhomoserine (thiol)-lyase [EC:2.5.1.49]
K10150  cysteine synthase / O-phosphoserine sulfhydrylase / cystathionine beta-synthase [EC:2.5.1.47 2.5.1.65 4.2.1.22]
K13034  L-3-cyanoalanine synthase/ cysteine synthase [EC:2.5.1.47 4.4.1.9]
K17069  O-acetylhomoserine/O-acetylserine sulfhydrylase [EC:2.5.1.49 2.5.1.47]

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