Reaction catalyzed by CDP-L-myo-inositol myo-inositolphosphotransferase (2.7.8.34)

		+			=			+
	CDP-1L-myo-inositol	+		1L-myo-inositol 1-phosphate	=		CMP	+		bis(1L-myo-inositol) 3,1'-phosphate 1-phosphate