4.4.1.21	S-ribosylhomocysteine lyase	C-S bond cleavage	-	Bacillus subtilis	O34667, O34667, O34667	
4.4.1.21	S-ribosylhomocysteine lyase	C-S bond cleavage	-	Escherichia coli	P45578, P45578, Q8X902	
4.4.1.21	S-ribosylhomocysteine lyase	C-S bond cleavage	-	Vibrio harveyi	Q9Z5X1	
4.4.1.25	L-cysteate sulfo-lyase	C-S bond cleavage	-	Ruegeria pomeroyi	-