Reaction catalyzed by all-trans-nonaprenyl diphosphate synthase [geranylgeranyl-diphosphate specific] (2.5.1.85)

		+	5		=	5		+
	geranylgeranyl diphosphate	+		5 isopentenyl diphosphate	=		5 diphosphate	+		all-trans-nonaprenyl diphosphate