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ENZYME entry: EC 4.4.1.36

Accepted Name
Hercynylcysteine S-oxide lyase.
Reaction catalysed
S-(hercyn-2-yl)-L-cysteine S-oxide + a reduced electron acceptor <=> ergothioneine + pyruvate + ammonia + an oxidized electron acceptor
Cofactor(s)
Pyridoxal 5'-phosphate.
Comment(s)
  • The enzyme, characterized from the bacterium Mycobacterium smegmatis, cayalyses the last step in the pathway of ergothioneine biosynthesis.
  • The enzyme forms a 2-sulfenohercynine intermediate, which is reduced to ergothioneine non-enzymically by a thiol.
  • In vitro, DTT can serve this function.
Cross-references
BRENDA4.4.1.36
EC2PDB4.4.1.36
ExplorEnz4.4.1.36
PRIAM enzyme-specific profiles4.4.1.36
KEGG Ligand Database for Enzyme Nomenclature4.4.1.36
IUBMB Enzyme Nomenclature4.4.1.36
IntEnz4.4.1.36
MEDLINEFind literature relating to 4.4.1.36
MetaCyc4.4.1.36

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All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.4.1.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.4.-.-
All ENZYME / UniProtKB/Swiss-Prot entries corresponding to 4.-.-.-