B6db activities : 4_4_1

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	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	-Eubacteria -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	2019/06/20 13:05