Bile Pigments, Phytochrome, Chromophor Model The common A-dihydrobiliverdin chromophor proposed to be present in both phycocyanin and phytochrome Pr has been characterized by using octaethylbiliverdin and its A-dihydro derivative as model compounds. The UV-vis spectra for the free bases, cations, anions and zinc complexes are reported, and the related protonation-deprotonation equilibria have b...

Aggregates containing both phycoerythrin and from hot springs (pH 8 .2-8 .4) in the lower Geyser phycocyanin were first described in the red alga Basin area of the Yellowstone National Park . The Porphyridium cruentum and named phycobilisomes temperature of the water at these sites was in the (7, 8) . This and subsequent investigations of range 65°-70°C . The selected unicells were usually phyc...