2.8.1.4	2-mercaptoethanol	-	63	
2.8.1.4	3-Mercaptopyruvate	competitive inhibitor, supresses the transfer of sulfur to tRNA	1122	
2.8.1.4	Cd2+	inhibits the synthesis of s4U	52	
2.8.1.4	Co2+	inhibits the synthesis of s4U	23	
2.8.1.4	cysteine	inhibits reaction with 3-mercaptopyruvate	153	
2.8.1.4	Fe2+	inhibits the synthesis of s4U	25	
2.8.1.4	additional information	dialyzable heat-stable inhibitor with a MW lower 5000 present in Morris hepatoma tumors	2	
2.8.1.4	Ni2+	inhibits the synthesis of s4U	38	
2.8.1.4	Zn2+	inhibits the synthesis of s4U	14