Reaction catalyzed by non-specific serine/threonine protein kinase (2.7.11.1), cAMP-dependent protein kinase (2.7.11.11), protein kinase C (2.7.11.13)

	ATP	+		histone H2A	=		ADP	+		phosphorylated histone H2A
	ATP	+		histone H2A	=		ADP	+		phosphorylated histone H2A