1.1.99.22	Ca2+	-	
1.1.99.22	Ca2+	required	
1.1.99.22	Ca2+	activates	
1.1.99.22	Ca2+	EDTA-treated enzyme is reactivated to almost the original level by the addition of pyrroloquinoline quinone and Ca2+	
1.1.99.22	additional information	Mg2+, Sr2+, Ba2+, and several kinds of lantanides do not activate the enzyme	
1.1.99.22	additional information	metallic ions, Mg2+, Sr2+, Ba2+, and several kinds of lantanides, are ineffective in reactivation of EDTA-trreated enzyme	
1.1.99.22	NH4+	85% activation at 10 mM