KEGG   ENZYME: 4.4.1.6Help
Entry
EC 4.4.1.6                  Enzyme                                 

Name
S-alkylcysteine lyase;
S-alkylcysteinase;
alkylcysteine lyase;
S-alkyl-L-cysteine sulfoxide lyase;
S-alkyl-L-cysteine lyase;
S-alkyl-L-cysteinase;
alkyl cysteine lyase;
S-alkyl-L-cysteine alkylthiol-lyase (deaminating)
Class
Lyases;
Carbon-sulfur lyases;
Carbon-sulfur lyases (only sub-subclass identified to date)
BRITE hierarchy
Sysname
S-alkyl-L-cysteine alkyl-thiol-lyase (deaminating; pyruvate-forming)
Reaction(IUBMB)
an S-alkyl-L-cysteine + H2O = an alkyl thiol + NH3 + pyruvate [RN:R02953]
Reaction(KEGG)
Substrate
S-alkyl-L-cysteine [CPD:C02749];
H2O [CPD:C00001]
Product
alkyl thiol [CPD:C00812];
NH3 [CPD:C00014];
pyruvate [CPD:C00022]
Comment
A pyridoxal-phosphate protein. Decomposes S-alkyl-L-cysteines by alpha,beta-elimination. Possibly identical, in yeast, with EC 4.4.1.8 cystathionine beta-lyase.
History
EC 4.4.1.6 created 1965, deleted 1972, reinstated 1976
Reference
1
  Authors
Nomura, J., Nishizuka, Y. and Hayaishi, O.
  Title
S-Alkylcysteinase: enzymatic cleavage of S-methyl-L-cysteine and its sulfoxide.
  Journal
J. Biol. Chem. 238 (1963) 1441-1446.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
62213-27-8

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