PHYCOBILISOMES AND ISOLATED PHYCOBILIPROTEINS. EFFECT OF GLUTARDIALDEHYDE AND BENZOQUINONE ON FLUORESCENCE
b'The fluorescence of the biliproteins C-phycocyanin from Spirulina platensis, B-phycoerythrin\\nfrom Porphyridium cruentum and of isolated whole P. cruentum phycobilisomes is quenched in the\\npresence of glutardialdehyde (GA) or benzoquinone (BQ). The kinetics of fluorescence decrease thus\\ninduced is biphasic. If GA is used as a quencher, the fluorescence can be recovered at 77 K. Contrary to\\nthe GA-effect, only a minor recovery takes place with BQ at 77K, thus demonstrating a different\\nmechanism of action of GA and BQ on biliproteins'