5.1.3.37	EDTA	1 mM, complete loss of activity	
5.1.3.37	additional information	no effect by 1 mM EDTA, and 5 mM 2-mercaptethanol	
5.1.3.37	NaCl	additions up to 0.1 M do not reduce the activity much, at 0.5 M NaCl less than 10% of the activity is retained	
5.1.3.37	Zn2+	1.5 mM, complete inhibition