5.3.1.32	(4S)-4-hydroxy-5-phosphonooxypentane-2,3-dione isomerase	-	
5.3.1.16	1-(5-phosphoribosyl)-5-[(5-phosphoribosylamino)methylideneamino]imidazole-4-carboxamide isomerase	-	
5.3.2.5	2,3-diketo-5-methylthiopentyl-1-phosphate enolase	-	
5.3.3.18	2-(1,2-epoxy-1,2-dihydrophenyl)acetyl-CoA isomerase	-	
5.3.1.35	2-dehydrotetronate isomerase	-	
5.3.3.20	2-hydroxyisobutanoyl-CoA mutase	transferred to EC 5.4.99.64	
5.3.2.6	2-hydroxymuconate tautomerase	-	
5.3.99.11	2-keto-myo-inositol isomerase	-	
5.3.3.19	3-[(4R)-4-hydroxycyclohexa-1,5-dien-1-yl]-2-oxopropanoate isomerase	-	
5.3.1.37	4-deoxy-4-sulfo-D-erythrose isomerase	-