2.5.1.76	L-phosphoserine + sulfite	-	Methanosarcina acetivorans	L-cysteate + phosphate	-	?	405641	
2.5.1.76	additional information	no reaction in absence of sulfite, no cysteine synthase activity. No substrates are: thiosulfate, nitrite, cyanide or thiocyanide anions	Methanosarcina acetivorans	?	-	?	89