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B6db activities: 4.4.1.6

4.4.1.6
Description S-alkylcysteine lyase.
Alternative names S-alkyl-L-cysteine sulfoxide lyase;
S-alkyl-L-cysteine lyase;
S-alkyl-L-cysteinase.
Catalyzed reaction An S-alkyl-L-cysteine + H(2)O = an alkyl thiol + NH(3) + pyruvate.
Cofactor Pyridoxal-phosphate.
Comments -!- Decomposes S-alkyl-L-cysteines by alpha,beta-elimination.
-!- Possibly identical, in yeast, with EC 4.4.1.8.
This activity is hardly distinguishable from that of cysteine-conjugate beta-lyase (EC 4.4.1.13).
Many different PLP-dependent enzymes (including cystathionine beta-lyases) may be able to catalyze this reaction.
Organisms -Bacteria -Plants
 
 
Links Enzyme (activities) 4.4.1.6
BRENDA (activities) 4.4.1.6
KEGG (pathways) 4.4.1.6
PLPMDB (PLP mutants) 4.4.1.6
 
References
 Kamitani, H.; Esaki, N.; Tanaka, H.; Imahara, H.; Soda, K. (1990) Purification and characterization of S-alkylcysteine alpha,beta-lyase from Pseudomonas putida J Nutr Sci Vitaminol (Tokyo) 36 339-47.

 Mazelis, M.; Creveling, R. K. (1975) Purification and properties of S-alkyl-L-cysteine lyase from seedlings of Acacia farnesiana Willd Biochem J 147 485-491.

Articles on 4.4.1.6
 
last changed 2009/07/13 10:11

B6db activities