Reaction catalyzed by phycobiliprotein cysteine-84 phycobilin lyase (4.4.1.29)

	apo-[phycoerythrin beta-subunit]	+			=		[phycoerythrin beta-subunit]-Cys82-phycoerythrobilin
	apo-[phycoerythrin beta-subunit]	+		3Z-phycoerythrobilin	=		[phycoerythrin beta-subunit]-Cys82-phycoerythrobilin