2.7.1.81	ATP + 5-hydroxy-L-lysine	catalytic efficiency is 22fold higher with GTP than with ATP	Homo sapiens	ADP + O-phosphohydroxy-L-lysine	-	422856	
2.7.1.81	GTP + 5-hydroxy-D-lysine	best substrate is the physiological form 5-hydroxy-L-lysine but human enzyme can also phosphorylate at a lower rate at least one other isomer	Homo sapiens	GDP + O-phosphohydroxy-D-lysine	-	423644	
2.7.1.81	GTP + 5-hydroxy-L-lysine	-	Rattus norvegicus	GDP + O-phosphohydroxy-L-lysine	-	357952	
2.7.1.81	GTP + 5-hydroxy-L-lysine	erythro-5-hydroxy-L8-lysine	Rattus norvegicus	GDP + O-phosphohydroxy-L-lysine	-	357952	
2.7.1.81	GTP + 5-hydroxy-L-lysine	best substrate is the physiological form 5-hydroxy-L-lysine but human enzyme can also phosphorylate at a lower rate at least one other isomer	Homo sapiens	GDP + O-phosphohydroxy-L-lysine	-	357952	
2.7.1.81	GTP + allohydroxy-L-lysine	-	Rattus norvegicus	?	-	357953	
2.7.1.81	additional information	no activity with D-isomers, ITP can partially substitute for GTP	Rattus norvegicus	?	-	89	
2.7.1.81	additional information	no activity with threonine, serine, or hydroxyproline	Rattus norvegicus	?	-	89	
2.7.1.81	additional information	no substrates for phosphorylation: ethanolamine, hydroxyproline, homoserine, serine, or choline	Homo sapiens	?	-	89