Tracking the secondary photodynamics of the green/red cyanobacteriochrome RcaE from Fremyella diplosiphon

â¿¢Excitation of the 15ZPg state of RcaE photoreceptor generates three primary photoproducts.â¿¢Only the Lumi-Go, photoproduct propagates to generate the 15EPr state.â¿¢Excitation of 15EPr generates the Lumi-Rf photoproduct with an anomalously long living lifetime.