4.99.1.2	alkylmercury lyase	-	
4.99.1.3	sirohydrochlorin cobaltochelatase	-	
4.99.1.4	sirohydrochlorin ferrochelatase	-	
4.99.1.8	heme ligase	-	
4.99.1.9	coproporphyrin ferrochelatase	-	
4.99.1.10	magnesium dechelatase	-	
4.99.1.11	sirohydrochlorin nickelchelatase	-	
4.99.1.12	pyridinium-3,5-bisthiocarboxylic acid mononucleotide nickel chelatase	-	
4.99.1.5	aliphatic aldoxime dehydratase	deleted. Now classified as EC 4.8.1.2	
4.99.1.6	indoleacetaldoxime dehydratase	deleted. Now classified as EC 4.8.1.3