2.5.1.27	(E)-4-hydroxy-3-methyl-but-2-enyl diphosphate + AMP	HMBPP, the enzyme uses the hydroxylated side chain precursor to form trans-zeatin-5'-monophosphate in the reaction with AMP, reaction rate is 0.5% of the rate with dimethylallyl díphosphate	Nostoc sp.	diphosphate + trans-zeatin riboside 5'phosphate	-	?	436641	
2.5.1.27	(E)-4-hydroxy-3-methyl-but-2-enyl diphosphate + AMP	HMBPP, the enzyme uses the hydroxylated side chain precursor to form trans-zeatin-5'-monophosphate in the reaction with AMP, reaction rate is 0.5% of the rate with dimethylallyl díphosphate	Nostoc sp. PCC 7120	diphosphate + trans-zeatin riboside 5'phosphate	-	?	436641	
2.5.1.27	1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate + AMP	-	Agrobacterium tumefaciens	diphosphate + N6-(4-hydroxy-3-methyl-2-(E)-butyl)adenosine 5'-phosphate	-	?	374969	
2.5.1.27	1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate + AMP	1-hydroxy-2-methyl-2-(E)-butenyl 4-diphosphate is an intermediate in the methylerythritol phosphate pathway. Agrobacterium tumefaciens modifies cytokinin biosynthesis by sending a key enzyme into plastids of the host plant to promote tumorigenesis	Agrobacterium tumefaciens	diphosphate + N6-(4-hydroxy-3-methyl-2-(E)-butyl)adenosine 5'-phosphate	-	?	374969	
2.5.1.27	4-hydroxy-3-methyl-2-(E)-butenyl diphosphate + ADP	4-hydroxy-3-methyl-2-(E)-butenyl diphosphate is a very poor substrate	Morus alba	diphosphate + N6-(4-hydroxy-3-methyl-2-(E)-butenyl)ADP	-	?	387460	
2.5.1.27	4-hydroxy-3-methyl-2-(E)-butenyl diphosphate + AMP	-	Arabidopsis thaliana	diphosphate + N6-(4-hydroxy-3-methyl-2-(E)-butyl)adenosine 5'-phosphate	-	?	375883	
2.5.1.27	4-hydroxy-3-methyl-2-(E)-butenyl diphosphate + ATP	4-hydroxy-3-methyl-2-(E)-butenyl diphosphate is a very poor substrate	Morus alba	trans-zeatin riboside 5'-triphosphate + diphosphate	-	?	387461	
2.5.1.27	dimethylallyl diphosphate + ADP	the enzyme prefers ADP and ATP rather than AMP	Arabidopsis thaliana	?	-	?	376710	
2.5.1.27	dimethylallyl diphosphate + ADP	the enzyme prefers ADP and ATP rather than AMP	Humulus lupulus	?	-	?	376710	
2.5.1.27	dimethylallyl diphosphate + ADP	the enzyme preferrs ADP and ATP rather than AMP	Arabidopsis thaliana	dimethylallyl-ADP + diphosphate	-	?	376711